verdaccio: 500 Internal Server Error - unknown error on only some packages

Describe the bug I get the 500 Internal Server Error - GET http://<my_registry>:4873/husky - unknown error on multiple packages like husky or jest. Other packages just work fine …

When i open the URL, verdaccio shows:

{
  "error": "unknown error"
}

When i run npm-check-updates (on the client) the following error is shown:

{
  headers: [Object: null prototype] {
    'x-powered-by': [ 'verdaccio/4.6.2' ],
    'access-control-allow-origin': [ '*' ],
    'content-type': [ 'application/json; charset=utf-8' ],
    'content-length': [ '31' ],
    vary: [ 'Accept-Encoding' ],
    date: [ 'Mon, 18 May 2020 10:33:41 GMT' ],
    connection: [ 'keep-alive' ],
    'x-fetch-attempts': [ '1' ]
  },
  statusCode: 500,
  code: 'E500',
  method: 'GET',
  uri: 'http://<my_registry>:4873/husky',
  body: { error: 'unknown error' },
  pkgid: 'husky@latest',
  message: '500 Internal Server Error - GET http://<my_registry>:4873/husky - unknown error'
}

To Reproduce I don’t really know - i have a pretty default Verdaccio installation and the error hasn’t occured when i installed it. I occurs when i try to update e.g. husky or jest some other packages seem to work just fine.

Expected behavior Don’t show the unknown error and just get the current data from the npm registry.

Configuration File (cat ~/.config/verdaccio/config.yaml)

Pretty standard / default:

# path to a directory with all packages
storage: /<my_nas>/srv/npm
# path to a directory with plugins to include
plugins: ./plugins

web:
  enable: true
  title: Verdaccio
  # comment out to disable gravatar support
  # gravatar: false
  # by default packages are ordercer ascendant (asc|desc)
  # sort_packages: asc

auth:
  htpasswd:
    file: ./htpasswd
    # Maximum amount of users allowed to register, defaults to "+inf".
    # You can set this to -1 to disable registration.
    # max_users: 1000

security:
  api:
    jwt:
      sign:
        expiresIn: 60d
        notBefore: 1
  web:
    sign:
      expiresIn: 7d
      notBefore: 1

# a list of other known repositories we can talk to
uplinks:
  npmjs:
    url: https://registry.npmjs.org/

packages:
  '@*/*':
    # scoped packages
    access: $all
    publish: $authenticated
    unpublish: $authenticated
    proxy: npmjs

  '**':
    # allow all users (including non-authenticated users) to read and
    # publish all packages
    #
    # you can specify usernames/groupnames (depending on your auth plugin)
    # and three keywords: "$all", "$anonymous", "$authenticated"
    access: $all

    # allow all known users to publish/publish packages
    # (anyone can register by default, remember?)
    publish: $authenticated
    unpublish: $authenticated

    # if package is not available locally, proxy requests to 'npmjs' registry
    proxy: npmjs

# You can specify HTTP/1.1 server keep alive timeout in seconds for incomming connections.
# A value of 0 makes the http server behave similarly to Node.js versions prior to 8.0.0, which did not have a keep-alive timeout.
# WORKAROUND: Through given configuration you can workaround following issue https://github.com/verdaccio/verdaccio/issues/301. Set to 0 in case 60 is not enought.
server:
  keepAliveTimeout: 60

middlewares:
  audit:
    enabled: true

# log settings
logs:
  - { type: stdout, format: pretty, level: http }
  #- {type: file, path: verdaccio.log, level: info}

listen: 0.0.0.0:4873

Environment information

System: OS: Linux 3.4 Debian GNU/Linux 10 (buster) 10 (buster) CPU: (4) arm ARMv7 Processor rev 5 (v7l) Binaries: Node: 13.14.0 - /usr/bin/node npm: 6.14.5 - /usr/bin/npm npmGlobalPackages: verdaccio: 4.6.2

Debugging output

• $ NODE_DEBUG=request verdaccio prints:

 error-=- error reading  package.json: Unexpected token : in JSON at position 216935
 http <-- 500, user: cmiksche(<my_client>), req: 'GET /husky', error: unknown error
 http <-- 500, user: cmiksche(<my_client>), req: 'GET /husky', error: unknown error
 error-=- error reading  package.json: Unexpected token          in JSON at position 57852
 http <-- 500, user: cmiksche(<my_client>), req: 'GET /jest', error: unknown error
 http <-- 500, user: cmiksche(<my_client>), req: 'GET /jest', error: unknown error