pyacoustid: acoustid submission error: response is not valid JSON - 504 gateway time-out

I’m adding new releases in MB database and I was curious after tagging why the fingerprint wasn’t on the website and I received no errors so I explicitly tried with the submit comment.

Output:

$ beet -vvv submit "./"
user configuration: /home/user/.config/beets/config.yaml
data directory: /home/user/.config/beets
plugin paths: /home/user/.beets-fetchartist
/home/user/.local/lib/python3.8/site-packages/beets/mediafile.py:21: UserWarning: beets.mediafile is deprecated; use mediafile instead
  warnings.warn("beets.mediafile is deprecated; use mediafile instead")
Sending event: pluginload
inline: adding item field my_samplerate
inline: adding item field my_bitrate
inline: adding item field is_flac
inline: adding item field is_album
inline: adding item field multidisc
inline: adding item field vinyl
inline: adding item field compilation_display
inline: adding album field fileformat
inline: adding album field av_bitrate
inline: adding album field avg_samplerate
inline: adding album field avg_bitdepth
library database: /media/music/.beet_library.blb
library directory: /media/Nas/Music
Sending event: library_opened
chroma: /media/Nas/Music/KNEECAP/Singles/2017 - C.E.A.R.T.A [MP3 320]/01 - C.E.A.R.T.A.mp3: fingerprint exists, skipping
chroma: submitting MBID
chroma: submitting 1 fingerprints
chroma: acoustid submission error: response is not valid JSON
Sending event: cli_exit

I tried multiple tracks, I always get that error - I also confirmed my API key.

Config:

original_date: no
per_disc_numbering: yes
threaded: yes
clutter: ["Thumbs.DB", ".DS_Store", "*.m3u", ".pls"]
ignore: ["*~", "System Volume Information"]

import:
    languages: en de fr jp
    move: yes
    copy: no
    bell: yes

ui:
    color: yes
    colors:
        text_success: green
        text_warning: yellow
        text_error: red
        text_highlight: red
        text_highlight_minor: lightgray
        action_default: turquoise
        action: cyan

pluginpath:
  ~/.beets-fetchartist

plugins: inline convert bpm discogs lastgenre absubmit acousticbrainz scrub fromfilename chroma acousticbrainz beatport the ftintitle fetchart embedart extrafiles edit fetchartist

aunique:
    keys: albumartist album year
    disambiguators: albumtype year country label catalognum albumdisambig releasegroupdisambig
    bracket: '()'

set_fields:
    how: ''

item_fields:
    my_samplerate: str(round(samplerate / 1000))
    my_bitrate: str(round(bitrate/1000))
    is_flac: 1 if format == "FLAC" else 0
    is_album: 1 if albumtype.upper() == "ALBUM" else 0
    multidisc: 1 if disctotal > 1 else 0
    vinyl: 1 if media in ['12" Vinyl', 'Vinyl'] else 0
    compilation_display: '''Soundtracks'' if albumtype.upper() == ''SOUNDTRACK'' else ''Compilations'''
    #first_artist: albumartist.split(', ',1)[0:1][0]

album_fields:  
    fileformat: |
        formatList = []
        for item in items:
            formatList.append(item.format.upper())
        return formatList
    av_bitrate: |
        total = 0
        for item in items:
            total += item.bitrate
        return str(round(total / len(items) / 1000))
    avg_samplerate: |
        total = 0
        for item in items:
            total += item.samplerate
        return str(round(total / len(items) / 1000))
    avg_bitdepth: |
        total = 0
        for item in items:
            total += item.bitdepth
        return str(round(total / len(items)))

paths:
    #default: %upper{%left{%asciify{%the{$albumartist}},1}}/$albumartist/%if{$year,$year - ,%if{$original_year,$original_year - }}$album%aunique{} ($format)/%if{$multidisc,$disc-}$track - $title
    # Albums/A/ASCI Artist Name, The/[YEAR] ASCI Album Name, The [EP]/01 - Track Name.mp3
    # %bucket{%upper{%left{%the{$albumartist},1}}}/
    default: '%the{$albumartist}/%if{$original_year,$original_year,%if{$year,$year,0000}} - $album%aunique{} [%ifdef{how,$how }%if{$vinyl,Vinyl }%upper{$format}%if{$is_flac, $avg_samplerate-$avg_bitdepth, $av_bitrate}]/%if{$multidisc,$disc-}$track - $title'
    albumtype:single: '%the{$albumartist}/Singles/%if{$original_year,$original_year,%if{$year,$year,0000}} - $album%aunique{} [%ifdef{how,$how }%if{$vinyl,Vinyl }%upper{$format}%if{$is_flac, $avg_samplerate-$my_samplerate, $my_bitrate}]/%if{$multidisc,$disc-}$track - $title'
    albumtype:ep: '%the{$albumartist}/EPs/%if{$original_year,$original_year,%if{$year,$year,0000}} - $album%aunique{} [%ifdef{how,$how }%if{$vinyl,Vinyl }%upper{$format}%if{$is_flac, $avg_samplerate-$avg_bitdepth, $av_bitrate}]/%if{$multidisc,$disc-}$track - $title'
    albumtype:soundtrack: Soundtracks/$album%aunique{}%if{$year, ($year),%if{$original_year, ($original_year)}} [%ifdef{how,$how }%if{$vinyl,Vinyl }%upper{$format}%if{$is_flac, $avg_samplerate-$avg_bitdepth, $av_bitrate}]/%if{$vinyl,$track_alt,%if{$multidisc,$disc-}$track} - $title
    comp: $compilation_display/%if{$year,$year - ,%if{$original_year,$original_year - }}$album%aunique{} [%ifdef{how,$how }%upper{$format}%if{$is_flac, $avg_samplerate-$avg_bitdepth, $av_bitrate}]/%if{$multidisc,$disc-}$track - $title
    singleton: '%the{$artist}/Non-Album/$title%if{$original_year, ($original_year),%if{$year, ($year),}} [%ifdef{how,$how }%upper{$format}%if{$is_flac, $samplerate-$bitdepth, $my_bitrate}]'

replace:
    '[\\/]': _
    '^\.': _
    '[\x00-\x1f]': _
    '[<>:"\?\*\|]': _
    '\.$': _
    '\s+$': ''
    '^\s+': ''
    '^-': _
    '[\u2018\u2019]': ''''
    '[\u201c\u201d\u2033]': '"'

check:
    import: yes
    write-check: yes
    write-update: yes
    convert-update: yes
    threads: 4

ftintitle:
    auto: yes
    drop: no
    format: feat. {0}

lyrics:
  fallback: ''
  google_engine_ID: xxxxxxx:xxxxxxx
  google_API_key: xxxxxxx-xxxxxxx

lastgenre:
    min_weight: 80
    count: 5
    prefer_specific: no
    separator: '; '

extrafiles:
    patterns:
        artworkdir:
          - '[sS]cans/'
          - '[aA]rtwork/'
          - '[aA]rtworks/'
          - '[cC]overs/'
        lyrics:
          - '*.lrc'
        lyrics2:
          - 'Lyrics/'
        nfo:
          - 'album.nfo'
    paths:
        artworkdir: $albumpath/artwork
        lyrics: $albumpath/$filename.lrc
        lyrics2: $albumpath/Lyrics

embedart:
    # I dont want album art auto-embedded either
    auto: no

fetchart:
  auto: yes
  minwidth: 400
  maxwidth: 2000
  sources: filesystem coverart itunes amazon albumart

fetchartist:
  filename: "poster"

acousticbrainz:
    force: yes

absubmit:
  extractor: ~/streaming_extractor_music
  auto: yes

acoustid:
    apikey: xxxxxxx

chroma:
    auto: yes

Any tips?