jupyterlab-lsp: The Python LSP server does not initialize/status 404 not found
Description
I try to uninstall all and install again but seems failed.
Version below: OS version == ubuntu 18.04 JupyterLab version == 2.2.8 Python version == 3.7.7 nodejs == 12.18.4
Reproduce
Steps:
- Open JupyterHub terminal
 - Run the following command:
 
sudo conda install -c conda-forge python=3 sudo conda install -c conda-forge jupyterlab curl -sL https://deb.nodesource.com/setup_12.x | sudo -E bash - sudo apt-get install -y nodejs sudo conda install -c conda-forge jupyter-lsp sudo jupyter serverextension enable --sys-prefix --py jupyter_lsp sudo jupyter labextension install @krassowski/jupyterlab-lsp@2.0.7 sudo conda install -c conda-forge python-language-server r-languageserver
- 
Add the below lines at the Advance Language Setting: { “language_servers”: { “pyls”: { “serverSettings”: { “pyls.plugins.pydocstyle.enabled”: true, “pyls.plugins.pyflakes.enabled”: false, “pyls.plugins.flake8.enabled”: true } }, “r-languageserver”: { “serverSettings”: { “r.lsp.debug”: false, “r.lsp.diagnostics”: false } } } }
 - 
Open a new python notebook
 - 
At the left hand corner, it shows “Initialized (additional servers needed)” – LSP servers Missing:1 python

 
Expected behavior
The tools should have ran normally.
Context
- Operating System and version: ubuntu 18.04
 - Browser and version: Google Chrome Version 85.0.4183.121
 - JupyterLab version: 2.2.8
 
Required: installed server extensions
Paste the output from running `jupyter serverextension list` from the command line here.
 jupyter_lsp  enabled 
    - Validating...
      jupyter_lsp 0.9.2 OK
    jupyterlab  enabled 
    - Validating...
      jupyterlab 2.2.8 OK
    nbgitpuller  enabled 
    - Validating...
      nbgitpuller 0.7.2 OK
    nteract_on_jupyter  enabled 
    - Validating...
      nteract_on_jupyter 2.1.3 OK
    nbresuse  enabled 
    - Validating...
      nbresuse  OK
You may want to sanitize the paths in the output.
Required: installed lab extensions
Paste the output from running `jupyter labextension list` from the command line here.
 @jupyter-widgets/jupyterlab-manager v1.1.0  enabled   X
        @jupyterlab/debugger v0.3.0-beta.1  enabled  OK
        @krassowski/jupyterlab-lsp v2.0.7  enabled  OK
        Saber v0.1.0  enabled  OK*
        jupyterlab-spreadsheet v0.2.0  enabled   X
You may want to sanitize the paths in the output.
Troubleshoot Output
Paste the output from running `jupyter troubleshoot` from the command line here.
pip list:
        Package                           Version
        --------------------------------- ---------
        absl-py                           0.8.1
        alabaster                         0.7.12
        alembic                           1.4.0
        ansiwrap                          0.8.4
        appdirs                           1.4.3
        argon2-cffi                       20.1.0
        astor                             0.8.0
        astroid                           2.4.2
        attrs                             20.2.0
        autopep8                          1.5.4
        Babel                             2.8.0
        backcall                          0.2.0
        Backtesting                       0.1.6
        beautifulsoup4                    4.8.2
        black                             19.10b0
        bleach                            3.2.1
        bokeh                             2.0.0
        boto3                             1.12.20
        botocore                          1.15.20
        brewer2mpl                        1.4.1
        brotlipy                          0.7.0
        bs4                               0.0.1
        cchardet                          2.1.5
        certifi                           2020.6.20
        certipy                           0.1.3
        cffi                              1.14.0
        chardet                           3.0.4
        click                             6.7
        colorama                          0.4.3
        colorlog                          4.1.0
        colormap                          1.0.3
        comtypes                          1.1.7
        conda                             4.8.5
        conda-package-handling            1.7.0
        cryptography                      3.1
        cycler                            0.10.0
        Cython                            0.29.15
        datapackage                       1.11.1
        DateTime                          4.3
        decorator                         4.4.2
        defusedxml                        0.6.0
        distro                            1.5.0
        dnspython                         1.16.0
        docopt                            0.6.2
        docutils                          0.15.2
        easydev                           0.9.38
        entrypoints                       0.3
        et-xmlfile                        1.0.1
        feedparser                        5.2.1
        flake8                            3.8.3
        fred                              3.1
        future                            0.18.2
        gast                              0.2.2
        ggplot                            0.11.5
        gitsome                           0.8.4
        google-pasta                      0.1.8
        grpcio                            1.16.1
        h5py                              2.10.0
        html5lib                          1.0.1
        idna                              2.10
        ijson                             2.6.1
        imagesize                         1.2.0
        importlib-metadata                1.7.0
        ipykernel                         5.3.4
        ipython                           7.18.1
        ipython-genutils                  0.2.0
        ipywidgets                        7.5.1
        isodate                           0.6.0
        isort                             5.5.3
        jdcal                             1.4.1
        jedi                              0.17.2
        Jinja2                            2.11.2
        jmespath                          0.9.5
        joblib                            0.14.1
        json5                             0.9.5
        jsonlines                         1.2.0
        jsonpickle                        1.3
        jsonpointer                       2.0
        jsonschema                        3.2.0
        jupyter-client                    6.1.6
        jupyter-contrib-core              0.3.3
        jupyter-contrib-nbextensions      0.5.1
        jupyter-core                      4.6.3
        jupyter-highlight-selected-word   0.2.0
        jupyter-latex-envs                1.4.6
        jupyter-lsp                       0.9.2
        jupyter-nbextensions-configurator 0.4.1
        jupyterhub                        1.0.0
        jupyterlab                        2.2.8
        jupyterlab-server                 1.2.0
        kafka-python                      1.4.3
        Keras                             2.3.1
        Keras-Applications                1.0.8
        Keras-Preprocessing               1.1.0
        kiwisolver                        1.1.0
        lazy-object-proxy                 1.4.3
        linear-tsv                        1.1.0
        linearmodels                      4.17
        lxml                              4.5.0
        Mako                              1.1.1
        Markdown                          3.1.1
        MarkupSafe                        1.1.1
        matplotlib                        3.1.3
        mccabe                            0.6.1
        mistune                           0.8.4
        more-itertools                    8.2.0
        mypy-extensions                   0.4.3
        mysql-connector-python            8.0.19
        nbclient                          0.2.0
        nbconvert                         5.6.1
        nbformat                          5.0.7
        nbgitpuller                       0.7.2
        nbresuse                          0.3.3
        nest-asyncio                      1.3.3
        networkx                          2.4
        notebook                          6.1.1
        nteract-on-jupyter                2.1.3
        numpy                             1.18.1
        numpydoc                          0.9.2
        oauthlib                          3.1.0
        openpyxl                          3.0.3
        opt-einsum                        3.1.0
        packaging                         20.4
        pamela                            1.0.0
        pandas                            1.0.0
        pandocfilters                     1.4.2
        papermill                         2.1.1
        parso                             0.7.1
        pathspec                          0.8.0
        patsy                             0.5.1
        pexpect                           4.8.0
        pickleshare                       0.7.5
        Pillow                            7.0.0
        pip                               20.2.2
        pluggy                            0.13.1
        ply                               3.11
        prometheus-client                 0.8.0
        prompt-toolkit                    3.0.7
        property-cached                   1.6.4
        protobuf                          3.6.1
        psutil                            5.6.7
        ptvsd                             4.3.2
        ptyprocess                        0.6.0
        pycodestyle                       2.6.0
        pycosat                           0.6.3
        pycparser                         2.20
        pydocstyle                        5.1.1
        pyflakes                          2.2.0
        Pygments                          2.7.1
        pylint                            2.6.0
        pyOpenSSL                         19.1.0
        pyparsing                         2.4.7
        pypi                              2.1
        pyrsistent                        0.17.3
        PySocks                           1.7.1
        python-dateutil                   2.8.1
        python-editor                     1.0.4
        python-jsonrpc-server             0.4.0
        python-language-server            0.35.1
        pytz                              2019.3
        PyYAML                            5.1.2
        pyzmq                             19.0.2
        rc-research-api                   0.0.12
        rc-util-lite                      0.1.16
        regex                             2020.5.7
        reports                           0.3.1
        requests                          2.24.0
        rfc3986                           1.3.2
        rope                              0.17.0
        ruamel-yaml                       0.15.87
        runipy                            0.1.5
        s3transfer                        0.3.3
        scikit-learn                      0.22.1
        scipy                             1.4.1
        seaborn                           0.10.0
        selenium                          3.141.0
        Send2Trash                        1.5.0
        setuptools                        50.3.0
        six                               1.15.0
        sklearn                           0.0
        snowballstemmer                   2.0.0
        soupsieve                         2.0
        Sphinx                            2.4.4
        sphinxcontrib-applehelp           1.0.2
        sphinxcontrib-devhelp             1.0.2
        sphinxcontrib-htmlhelp            1.0.3
        sphinxcontrib-jsmath              1.0.1
        sphinxcontrib-qthelp              1.0.3
        sphinxcontrib-serializinghtml     1.1.4
        SQLAlchemy                        1.3.13
        statsmodels                       0.11.1
        tableschema                       1.15.0
        tabula-py                         2.1.0
        tabulator                         1.35.0
        tenacity                          6.2.0
        tensorboard                       2.0.0
        tensorflow                        2.0.0
        tensorflow-estimator              2.0.0
        termcolor                         1.1.0
        terminado                         0.8.3
        testpath                          0.4.4
        textwrap3                         0.9.2
        Theano                            1.0.4
        there                             0.0.9
        toml                              0.10.1
        tornado                           6.0.4
        tqdm                              4.49.0
        traitlets                         5.0.4
        typed-ast                         1.4.1
        typing-extensions                 3.7.4.1
        ujson                             3.2.0
        unicodecsv                        0.14.1
        uritemplate                       3.0.1
        uritemplate.py                    3.0.2
        urllib3                           1.25.10
        wcwidth                           0.2.5
        webencodings                      0.5.1
        weo                               0.0.65
        Werkzeug                          0.16.1
        wheel                             0.35.1
        widgetsnbextension                3.5.1
        wrapt                             1.11.2
        xlrd                              1.2.0
        XlsxWriter                        1.2.8
        xmltodict                         0.12.0
        yapf                              0.30.0
        zipp                              3.1.0
        zope.interface                    4.7.2
conda list:
# packages in environment at /opt/tljh/user:
#
# Name                    Version                   Build  Channel
_libgcc_mutex             0.1                        main
_r-mutex                  1.0.1               anacondar_1    conda-forge
absl-py                   0.8.1                    pypi_0    pypi
alabaster                 0.7.12                   pypi_0    pypi
alembic                   1.4.0                    pypi_0    pypi
ansiwrap                  0.8.4                    pypi_0    pypi
appdirs                   1.4.3                    pypi_0    pypi
argon2-cffi               20.1.0           py37h7b6447c_1
astor                     0.8.0                    pypi_0    pypi
astroid                   2.4.2                    py37_0
attrs                     19.3.0                   pypi_0    pypi
autopep8                  1.5.4                    pypi_0    pypi
babel                     2.8.0                    pypi_0    pypi
backcall                  0.1.0                    pypi_0    pypi
backtesting               0.1.6                    pypi_0    pypi
beautifulsoup4            4.8.2                    pypi_0    pypi
black                     19.10b0                  pypi_0    pypi
bleach                    3.1.0                    pypi_0    pypi
bokeh                     2.0.0                    pypi_0    pypi
boto3                     1.12.20                  pypi_0    pypi
botocore                  1.15.20                  pypi_0    pypi
brewer2mpl                1.4.1                    pypi_0    pypi
brotlipy                  0.7.0           py37h7b6447c_1000
bs4                       0.0.1                    pypi_0    pypi
bwidget                   1.9.11                        1
bzip2                     1.0.8                h7b6447c_0
ca-certificates           2020.6.20            hecda079_0    conda-forge
cairo                     1.14.12              h8948797_3
cchardet                  2.1.5                    pypi_0    pypi
certifi                   2019.11.28               pypi_0    pypi
certipy                   0.1.3                    pypi_0    pypi
cffi                      1.14.0           py37h2e261b9_0
chardet                   3.0.4                 py37_1003
click                     6.7                      pypi_0    pypi
colorama                  0.4.3                    pypi_0    pypi
colorlog                  4.1.0                    pypi_0    pypi
colormap                  1.0.3                    pypi_0    pypi
comtypes                  1.1.7                    pypi_0    pypi
conda                     4.8.5            py37hc8dfbb8_1    conda-forge
conda-package-handling    1.6.1            py37h7b6447c_0
cryptography              3.1              py37h1ba5d50_0
curl                      7.68.0               hf8cf82a_0    conda-forge
cycler                    0.10.0                   pypi_0    pypi
cython                    0.29.15                  pypi_0    pypi
datapackage               1.11.1                   pypi_0    pypi
datetime                  4.3                      pypi_0    pypi
decorator                 4.4.1                    pypi_0    pypi
defusedxml                0.6.0                      py_0
distro                    1.5.0                    pypi_0    pypi
dnspython                 1.16.0                   pypi_0    pypi
docopt                    0.6.2                    pypi_0    pypi
docutils                  0.15.2                   pypi_0    pypi
easydev                   0.9.38                   pypi_0    pypi
entrypoints               0.3                      py37_0
et-xmlfile                1.0.1                    pypi_0    pypi
feedparser                5.2.1                    pypi_0    pypi
flake8                    3.8.3                    pypi_0    pypi
fontconfig                2.13.1            he4413a7_1000    conda-forge
fred                      3.1                      pypi_0    pypi
freetype                  2.10.2               h5ab3b9f_0
future                    0.18.2                   py37_1
gast                      0.2.2                    pypi_0    pypi
gettext                   0.19.8.1             hd7bead4_3
ggplot                    0.11.5                   pypi_0    pypi
gitsome                   0.8.4                    pypi_0    pypi
glib                      2.56.2            had28632_1001    conda-forge
google-pasta              0.1.8                    pypi_0    pypi
graphite2                 1.3.14               h23475e2_0
grpcio                    1.16.1                   pypi_0    pypi
gsl                       2.2.1                h0c605f7_3
h5py                      2.10.0                   pypi_0    pypi
harfbuzz                  1.9.0             he243708_1001    conda-forge
html5lib                  1.0.1                    pypi_0    pypi
icu                       58.2                 he6710b0_3
idna                      2.10                       py_0
ijson                     2.6.1                    pypi_0    pypi
imagesize                 1.2.0                    pypi_0    pypi
importlib-metadata        1.5.0                    pypi_0    pypi
importlib_metadata        1.7.0                         0
ipykernel                 5.1.4                    pypi_0    pypi
ipython                   7.12.0                   pypi_0    pypi
ipython-genutils          0.2.0                    pypi_0    pypi
ipython_genutils          0.2.0                    py37_0
ipywidgets                7.5.1                    pypi_0    pypi
isodate                   0.6.0                    pypi_0    pypi
isort                     5.5.3                    py37_0
jdcal                     1.4.1                    pypi_0    pypi
jedi                      0.17.2                   pypi_0    pypi
jinja2                    2.11.1                   pypi_0    pypi
jmespath                  0.9.5                    pypi_0    pypi
joblib                    0.14.1                   pypi_0    pypi
jpeg                      9d                   h516909a_0    conda-forge
json5                     0.9.0                    pypi_0    pypi
jsonlines                 1.2.0                    pypi_0    pypi
jsonpickle                1.3                      pypi_0    pypi
jsonpointer               2.0                      pypi_0    pypi
jsonschema                3.2.0                    py37_1
jupyter-client            6.1.2                    pypi_0    pypi
jupyter-contrib-core      0.3.3                    pypi_0    pypi
jupyter-contrib-nbextensions 0.5.1                    pypi_0    pypi
jupyter-core              4.6.1                    pypi_0    pypi
jupyter-highlight-selected-word 0.2.0                    pypi_0    pypi
jupyter-latex-envs        1.4.6                    pypi_0    pypi
jupyter-lsp               0.9.2                      py_1    conda-forge
jupyter-nbextensions-configurator 0.4.1                    pypi_0    pypi
jupyter_client            6.1.6                      py_0
jupyter_core              4.6.3                    py37_0
jupyterhub                1.0.0                    pypi_0    pypi
jupyterlab                2.2.0                    pypi_0    pypi
jupyterlab_server         1.2.0                      py_0
kafka-python              1.4.3                    pypi_0    pypi
keras                     2.3.1                    pypi_0    pypi
keras-applications        1.0.8                    pypi_0    pypi
keras-preprocessing       1.1.0                    pypi_0    pypi
kiwisolver                1.1.0                    pypi_0    pypi
krb5                      1.16.4               h173b8e3_0
lazy-object-proxy         1.4.3            py37h7b6447c_0
ld_impl_linux-64          2.33.1               h53a641e_7
libcurl                   7.68.0               hda55be3_0    conda-forge
libedit                   3.1.20191231         h14c3975_1
libffi                    3.2.1                hd88cf55_4
libgcc                    7.2.0                h69d50b8_2
libgcc-ng                 9.1.0                hdf63c60_0
libgfortran               3.0.0                         1    conda-forge
libiconv                  1.15                 h63c8f33_5
libpng                    1.6.37               hbc83047_0
libsodium                 1.0.18               h7b6447c_0
libssh2                   1.9.0                h1ba5d50_1
libstdcxx-ng              9.1.0                hdf63c60_0
libtiff                   4.1.0                h2733197_1
libuuid                   2.32.1            h14c3975_1000    conda-forge
libxcb                    1.14                 h7b6447c_0
libxml2                   2.9.10               he19cac6_1
linear-tsv                1.1.0                    pypi_0    pypi
linearmodels              4.17                     pypi_0    pypi
lxml                      4.5.0                    pypi_0    pypi
lz4-c                     1.9.2                he6710b0_1
make                      4.2.1                h1bed415_1
mako                      1.1.1                    pypi_0    pypi
markdown                  3.1.1                    pypi_0    pypi
markupsafe                1.1.1            py37h14c3975_1
matplotlib                3.1.3                    pypi_0    pypi
mccabe                    0.6.1                    pypi_0    pypi
mistune                   0.8.4           py37h14c3975_1001
more-itertools            8.2.0                    pypi_0    pypi
mypy-extensions           0.4.3                    pypi_0    pypi
mysql-connector-python    8.0.19                   pypi_0    pypi
nbclient                  0.2.0                    pypi_0    pypi
nbconvert                 5.6.1                    py37_1
nbformat                  5.0.4                    pypi_0    pypi
nbgitpuller               0.7.2                    pypi_0    pypi
nbresuse                  0.3.3                    pypi_0    pypi
ncurses                   6.2                  he6710b0_1
nest-asyncio              1.3.3                    pypi_0    pypi
networkx                  2.4                      pypi_0    pypi
notebook                  6.0.3                    pypi_0    pypi
nteract-on-jupyter        2.1.3                    pypi_0    pypi
numpy                     1.18.1                   pypi_0    pypi
numpydoc                  0.9.2                    pypi_0    pypi
oauthlib                  3.1.0                    pypi_0    pypi
openpyxl                  3.0.3                    pypi_0    pypi
openssl                   1.1.1h               h516909a_0    conda-forge
opt-einsum                3.1.0                    pypi_0    pypi
packaging                 20.3                     pypi_0    pypi
pamela                    1.0.0                    pypi_0    pypi
pandas                    1.0.0                    pypi_0    pypi
pandoc                    2.10.1                        0
pandocfilters             1.4.2                    py37_1
pango                     1.40.14           hf0c64fd_1003    conda-forge
papermill                 2.1.1                    pypi_0    pypi
parso                     0.7.1                    pypi_0    pypi
pathspec                  0.8.0                    pypi_0    pypi
patsy                     0.5.1                    pypi_0    pypi
pcre                      8.44                 he6710b0_0
pexpect                   4.8.0                    py37_1
pickleshare               0.7.5                 py37_1001
pillow                    7.0.0                    pypi_0    pypi
pip                       20.2.2                   py37_0
pixman                    0.40.0               h7b6447c_0
pluggy                    0.13.1                   py37_0
ply                       3.11                     pypi_0    pypi
prometheus-client         0.7.1                    pypi_0    pypi
prometheus_client         0.8.0                      py_0
prompt-toolkit            2.0.10                   pypi_0    pypi
property-cached           1.6.4                    pypi_0    pypi
protobuf                  3.6.1                    pypi_0    pypi
psutil                    5.6.7                    pypi_0    pypi
ptvsd                     4.3.2            py37h516909a_1    conda-forge
ptyprocess                0.6.0                    py37_0
pycodestyle               2.6.0                    pypi_0    pypi
pycosat                   0.6.3            py37h7b6447c_0
pycparser                 2.20                       py_2
pydocstyle                5.1.1                      py_0
pyflakes                  2.2.0                    pypi_0    pypi
pygments                  2.5.2                    pypi_0    pypi
pylint                    2.6.0                    py37_0
pyopenssl                 19.1.0                     py_1
pyparsing                 2.4.6                    pypi_0    pypi
pypi                      2.1                      pypi_0    pypi
pyrsistent                0.15.7                   pypi_0    pypi
pysocks                   1.7.1                    py37_1
python                    3.7.7           h191fe78_0_cpython
python-dateutil           2.8.1                      py_0
python-editor             1.0.4                    pypi_0    pypi
python-jsonrpc-server     0.4.0                    pypi_0    pypi
python-language-server    0.35.1                   pypi_0    pypi
python_abi                3.7                     1_cp37m    conda-forge
pytz                      2019.3                   pypi_0    pypi
pyyaml                    5.1.2                    pypi_0    pypi
pyzmq                     18.1.1                   pypi_0    pypi
r-askpass                 1.1               r35hcdcec82_1    conda-forge
r-assertthat              0.2.1             r35h6115d3f_1    conda-forge
r-backports               1.1.6             r35hcdcec82_1    conda-forge
r-base                    3.5.1                h391c2eb_5    conda-forge
r-base64enc               0.1_3           r35hcdcec82_1003    conda-forge
r-callr                   3.4.3             r35h6115d3f_0    conda-forge
r-cli                     2.0.2             r35h6115d3f_0    conda-forge
r-clipr                   0.7.0             r35h6115d3f_0    conda-forge
r-codetools               0.2_16          r35h6115d3f_1001    conda-forge
r-collections             0.3.1             r35hcdcec82_0    conda-forge
r-crayon                  1.3.4           r35h6115d3f_1002    conda-forge
r-curl                    4.3               r35hcdcec82_0    conda-forge
r-cyclocomp               1.1.0           r35h6115d3f_1003    conda-forge
r-desc                    1.2.0           r35h6115d3f_1002    conda-forge
r-digest                  0.6.25            r35h0357c0b_1    conda-forge
r-ellipsis                0.3.0             r35hcdcec82_0    conda-forge
r-evaluate                0.14              r35h6115d3f_1    conda-forge
r-fansi                   0.4.1             r35hcdcec82_0    conda-forge
r-fs                      1.4.1             r35h0357c0b_0    conda-forge
r-glue                    1.4.0             r35hcdcec82_0    conda-forge
r-highr                   0.8               r35h6115d3f_1    conda-forge
r-hms                     0.5.3             r35h6115d3f_0    conda-forge
r-htmltools               0.4.0             r35h0357c0b_0    conda-forge
r-httr                    1.4.1             r35h6115d3f_1    conda-forge
r-jsonlite                1.6.1             r35hcdcec82_0    conda-forge
r-knitr                   1.28              r35h6115d3f_0    conda-forge
r-languageserver          0.3.5             r35hcdcec82_0    conda-forge
r-lazyeval                0.2.2             r35hcdcec82_1    conda-forge
r-lifecycle               0.2.0             r35h6115d3f_0    conda-forge
r-lintr                   2.0.1             r35h6115d3f_0    conda-forge
r-magrittr                1.5             r35h6115d3f_1002    conda-forge
r-markdown                1.1               r35hcdcec82_0    conda-forge
r-mime                    0.9               r35hcdcec82_0    conda-forge
r-openssl                 1.4.1             r35he5c4762_0    conda-forge
r-pillar                  1.4.3             r35h6115d3f_0    conda-forge
r-pkgconfig               2.0.3             r35h6115d3f_0    conda-forge
r-praise                  1.0.0           r35h6115d3f_1003    conda-forge
r-processx                3.4.2             r35hcdcec82_0    conda-forge
r-ps                      1.3.2             r35hcdcec82_0    conda-forge
r-purrr                   0.3.4             r35hcdcec82_0    conda-forge
r-r6                      2.4.1             r35h6115d3f_0    conda-forge
r-rcpp                    1.0.4.6           r35h0357c0b_0    conda-forge
r-readr                   1.3.1           r35h0357c0b_1002    conda-forge
r-rematch2                2.1.2             r35h6115d3f_0    conda-forge
r-remotes                 2.1.1             r35h6115d3f_0    conda-forge
r-repr                    1.1.0             r35h6115d3f_0    conda-forge
r-rex                     1.2.0             r35h6115d3f_0    conda-forge
r-rlang                   0.4.5             r35hcdcec82_2    conda-forge
r-rprojroot               1.3_2           r35h6115d3f_1002    conda-forge
r-rstudioapi              0.11              r35h6115d3f_0    conda-forge
r-stringdist              0.9.5.5           r35hcdcec82_0    conda-forge
r-stringi                 1.4.3             r35h0357c0b_2    conda-forge
r-stringr                 1.4.0             r35h6115d3f_1    conda-forge
r-styler                  1.2.0             r35h6115d3f_0    conda-forge
r-sys                     3.3               r35hcdcec82_0    conda-forge
r-testthat                2.2.1             r35h0357c0b_0    conda-forge
r-tibble                  3.0.1             r35hcdcec82_0    conda-forge
r-utf8                    1.1.4           r35hcdcec82_1002    conda-forge
r-vctrs                   0.2.4             r35hcdcec82_0    conda-forge
r-withr                   2.2.0             r35h6115d3f_0    conda-forge
r-xfun                    0.13              r35h6115d3f_0    conda-forge
r-xml2                    1.3.2             r35h0357c0b_0    conda-forge
r-xmlparsedata            1.0.3             r35h6115d3f_0    conda-forge
r-xptr                    1.1.3             r35hcdcec82_0    conda-forge
r-yaml                    2.2.1             r35hcdcec82_0    conda-forge
r-zeallot                 0.1.0           r35h6115d3f_1001    conda-forge
rc-research-api           0.0.12                   pypi_0    pypi
rc-util-lite              0.1.16                   pypi_0    pypi
readline                  7.0                  h7b6447c_5
regex                     2020.5.7                 pypi_0    pypi
reports                   0.3.1                    pypi_0    pypi
requests                  2.24.0                     py_0
rfc3986                   1.3.2                    pypi_0    pypi
rope                      0.17.0                     py_0
ruamel_yaml               0.15.87          py37h7b6447c_1
runipy                    0.1.5                    pypi_0    pypi
s3transfer                0.3.3                    pypi_0    pypi
scikit-learn              0.22.1                   pypi_0    pypi
scipy                     1.4.1                    pypi_0    pypi
seaborn                   0.10.0                   pypi_0    pypi
selenium                  3.141.0                  pypi_0    pypi
send2trash                1.5.0                    py37_0
setuptools                50.3.0                   pypi_0    pypi
six                       1.15.0                     py_0
sklearn                   0.0                      pypi_0    pypi
snowballstemmer           2.0.0                      py_0
soupsieve                 2.0                      pypi_0    pypi
sphinx                    2.4.4                    pypi_0    pypi
sphinxcontrib-applehelp   1.0.2                    pypi_0    pypi
sphinxcontrib-devhelp     1.0.2                    pypi_0    pypi
sphinxcontrib-htmlhelp    1.0.3                    pypi_0    pypi
sphinxcontrib-jsmath      1.0.1                    pypi_0    pypi
sphinxcontrib-qthelp      1.0.3                    pypi_0    pypi
sphinxcontrib-serializinghtml 1.1.4                    pypi_0    pypi
sqlalchemy                1.3.13                   pypi_0    pypi
sqlite                    3.33.0               h62c20be_0
statsmodels               0.11.1                   pypi_0    pypi
tableschema               1.15.0                   pypi_0    pypi
tabula-py                 2.1.0                    pypi_0    pypi
tabulator                 1.35.0                   pypi_0    pypi
tenacity                  6.2.0                    pypi_0    pypi
tensorboard               2.0.0                    pypi_0    pypi
tensorflow                2.0.0                    pypi_0    pypi
tensorflow-estimator      2.0.0                    pypi_0    pypi
termcolor                 1.1.0                    pypi_0    pypi
terminado                 0.8.3                    pypi_0    pypi
testpath                  0.4.4                      py_0
textwrap3                 0.9.2                    pypi_0    pypi
theano                    1.0.4                    pypi_0    pypi
there                     0.0.9                    pypi_0    pypi
tk                        8.6.10               hbc83047_0
tktable                   2.10                 h14c3975_0
toml                      0.10.0                   pypi_0    pypi
tornado                   6.0.3                    pypi_0    pypi
tqdm                      4.46.0                   pypi_0    pypi
traitlets                 4.3.3                    pypi_0    pypi
typed-ast                 1.4.1            py37h7b6447c_0
typing-extensions         3.7.4.1                  pypi_0    pypi
ujson                     3.2.0                    pypi_0    pypi
unicodecsv                0.14.1                   pypi_0    pypi
uritemplate               3.0.1                    pypi_0    pypi
uritemplate-py            3.0.2                    pypi_0    pypi
urllib3                   1.25.10                    py_0
wcwidth                   0.1.8                    pypi_0    pypi
webencodings              0.5.1                    pypi_0    pypi
weo                       0.0.65                   pypi_0    pypi
werkzeug                  0.16.1                   pypi_0    pypi
wheel                     0.35.1                     py_0
widgetsnbextension        3.5.1                    pypi_0    pypi
wrapt                     1.11.2           py37h7b6447c_0
xeus                      0.24.1               h4d8c418_0    conda-forge
xeus-python               0.8.1            py37h99015e2_0    conda-forge
xlrd                      1.2.0                    pypi_0    pypi
xlsxwriter                1.2.8                    pypi_0    pypi
xmltodict                 0.12.0                   pypi_0    pypi
xz                        5.2.5                h7b6447c_0
yaml                      0.2.5                h7b6447c_0
yapf                      0.30.0                     py_0
zeromq                    4.3.2                he6710b0_3
zipp                      2.2.0                    pypi_0    pypi
zlib                      1.2.11               h7b6447c_3
zope-interface            4.7.2                    pypi_0    pypi
zstd                      1.4.5                h9ceee32_0
You may want to sanitize the paths in the output.
Command Line Output
Paste the output from your command line running `jupyter lab` here, use `--debug` if possible.
Browser Output
Paste the output from your browser Javascript console here.
feature.js:7 @krassowski/jupyterlab-lsp:signature settings schema could not be found and was not loaded
feature.js:7 @krassowski/jupyterlab-lsp:highlights settings schema could not be found and was not loaded
GET http://ip_address_of_jupyterhub/user/user_name/lsp/status?1601013708459 404 (Not Found)
manager.js:36 Could not fetch sessions Response {type: "basic", url: "http://ip_address_of_jupyterhub/user/user_name/lsp/status?1601013708459", redirected: false, status: 404, ok: false, …}
_Originally posted by @lindaorny in https://github.com/krassowski/jupyterlab-lsp/issues/374#issuecomment-698707985_
About this issue
- Original URL
 - State: closed
 - Created 4 years ago
 - Reactions: 8
 - Comments: 25 (7 by maintainers)
 
@krassowski I can confirm that setting the JUPYTERHUB_SINGLEUSER_APP variable in the JupyterHub config file allows the use of the python language server without downgrading to jupyter-lsp 0.9.3. Here is the relevant stanza from my jupyterhub_config.py:
Thank you very much for your help figuring this out!