Package: jupyterlab
Version: 4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-4
Severity: important
X-Debbugs-Cc: [email protected]
I have problems with the jupyter lab client. Obviously it is running into an
endless loop.
After starting the server with `jupyter lab` in my notebook directory, the web
browser comes up and loads jupyter lab. The logo animation works but
afterwards, the window hangs showing the logo. When I click into the window
Firefox complains about the website slowing down my computer.
In the javascript console I found the following:
InternalError: too much recursion
gt binary-search.js:4
gt binary-search.js:12
colorContrast palette.js:60
yt accent-foreground.js:13
Pr design-tokens.js:288
evaluate design-tokens.js:294
Mr design-tokens.js:299
observe observable.js:75
design-token.js:185:1
handleChange design-token.js:185
notify notifier.js:95
call observable.js:126
notify notifier.js:103
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:98
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:103
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:95
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:103
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:98
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:103
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:95
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:103
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:95
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:103
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:98
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:103
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:95
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:103
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:95
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:103
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:98
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:103
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:95
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:103
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:98
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:103
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:95
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:103
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:95
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:103
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:98
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:103
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:98
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:103
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:98
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
call observable.js:126
notify notifier.js:103
notify notifier.js:131
set design-token.js:199
handleChange design-token.js:182
notify notifier.js:95
The server log shows:
Or copy and paste one of these URLs:
http://localhost:8888/lab?token=77746eaa75890c654f8e4fbdba2cabfb4996b7c58107e152
http://127.0.0.1:8888/lab?token=77746eaa75890c654f8e4fbdba2cabfb4996b7c58107e152
[W 2026-08-23 13:31:16.219 ServerApp] 404 GET /lsp/status?1787484676182
([email protected]) 24.96ms
referer=http://localhost:8888/lab
[E 2026-08-23 13:31:16.801 LabApp] Fail to get yarn configuration. Expecting
value: line 1 column 1 (char 0)
[I 2026-08-23 13:31:16.814 LabApp] Build is up to date
-- System Information:
Debian Release: forky/sid
APT prefers unstable-debug
APT policy: (500, 'unstable-debug'), (500, 'testing-debug'), (500,
'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386, mingw64-amd64, mingw64-i386
Kernel: Linux 7.1.8+deb14.1-amd64 (SMP w/4 CPU threads; PREEMPT)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages jupyterlab depends on:
ii jest 29.6.2~ds7+~cs73.45.28-3
ii libjs-simulate- 1.4.0-2
event [node-sim
ulate-event]
ii node-ajv 8.20.0~ds+~cs7.1.3-3
ii node-babel7 7.20.15+ds1+~cs214.269.168-18
pn node-call-bind <none>
ii node-codemirror 6.18.6~6.38.1+~cs119.80.67-1
-autocomplete
ii node-codemirror 6.8.1~6.38.1+~cs119.80.67-1
-commands
ii node-codemirror 6.0.3~6.38.1+~cs119.80.67-1
-lang-cpp
ii node-codemirror 6.3.1~6.38.1+~cs119.80.67-1
-lang-css
ii node-codemirror 6.4.9~6.38.1+~cs119.80.67-1
-lang-html
ii node-codemirror 6.0.2~6.38.1+~cs119.80.67-1
-lang-java
ii node-codemirror 6.2.4~6.38.1+~cs119.80.67-1
-lang-javascrip
t
ii node-codemirror 6.0.2~6.38.1+~cs119.80.67-1
-lang-json
ii node-codemirror 6.38.1+~cs119.80.67-1
-lang-markdown
ii node-codemirror 6.0.2~6.38.1+~cs119.80.67-1
-lang-php
ii node-codemirror 6.2.1~6.38.1+~cs119.80.67-1
-lang-python
ii node-codemirror 6.0.2~6.38.1+~cs119.80.67-1
-lang-rust
ii node-codemirror 6.9.1~6.38.1+~cs119.80.67-1
-lang-sql
ii node-codemirror 6.0.2~6.38.1+~cs119.80.67-1
-lang-wast
ii node-codemirror 6.1.0~6.38.1+~cs119.80.67-1
-lang-xml
ii node-codemirror 6.11.2~6.38.1+~cs119.80.67-1
-language
ii node-codemirror 6.5.1~6.38.1+~cs119.80.67-1
-legacy-modes
ii node-codemirror 6.5.11~6.38.1+~cs119.80.67-1
-search
ii node-codemirror 6.2.0-2
-state
ii node-codemirror 6.38.1~6.38.1+~cs119.80.67-1
-view
ii node-commander 14.0.3-7
ii node-css-loader 6.11.0+~cs15.5.7-2
ii node-deep-equal 2.2.3+ds1+~cs43.15.94-1
[node-get-intr
insic]
ii node-deepmerge 4.3.1+~1.1.1-1
ii node-fetch 3.3.2+~cs11.4.11-3
ii node-fortawesom 7.3.1+ds1-1
e-fontawesome-f
ree
ii node-fs-extra 10.1.0+~9.0.13-3
ii node-glob 13.0.6+~cs0.4.15-2
ii node-json-schem 0.4.0+~7.0.15-1
a
ii node-json5 2.2.3+dfsg-8
ii node-lezer-comm 1.2.3~1.5.3+~cs14.29.58-4
on [node-lezer-
highlight]
ii node-lezer-gene 1.8.0~1.5.3+~cs14.29.58-4
rator
ii node-lezer-mark 1.4.3~1.5.3+~cs14.29.58-4
down
ii node-license-we 4.0.2-4
bpack-plugin
ii node-lodash-pac 4.18.1+dfsg1-2
kages
ii node-long 5.2.3-3
ii node-lumino 2026.2.5-2
ii node-marked 18.0.6+~cs7.2.17-2
ii node-mathjax-fu 3.2.2+~cs4.2.1-6
ll
ii node-microsoft- 5.3.1~0~20260528+ds1+~1.1.1~git+~5.3.1~git+~cs14.79.39-8
fast-colors
ii node-microsoft- 2.0.0+really1.14.0~0~20260528+ds1+~1.1.1~git+~5.3.1~git+~c
fast-element s14.79.39-8
ii node-microsoft- 3.0.0+really2.50.0~0~20260528+ds1+~1.1.1~git+~5.3.1~git+~c
fast-foundation s14.79.39-8
ii node-microsoft- 6.0.0+really5.4.1~0~20260528+ds1+~1.1.1~git+~5.3.1~git+~cs
fast-web-utilit 14.79.39-8
ies
ii node-mini-css-e 2.10.2+~2.5.1-1
xtract-plugin
ii node-minimist 1.2.8+~cs5.3.5-4
ii node-package-js 8.1.1-6
on
ii node-path-brows 1.0.1-3
erify
ii node-playwright 1.38.0+ds-9
[node-playwrig
ht-test]
ii node-process 0.11.10-3
ii node-react 18.3.1+dfsg+~cs88.78.12-6
ii node-react-dom 18.3.1~18.3.1+dfsg+~cs88.78.12-6
ii node-react-high 0.20.0+~cs7.18.6+ds-1
light-words
ii node-react-json 0.18.0~3.13.1~git20230831-5
-tree
ii node-react-pagi 8.3.0+ds-1
nate
ii node-react-toas 9.1.2+~1.2.1-5
tify
ii node-regexp-mat 1.0.2~git20190823-3
ch-indices
ii node-rjsf [node 5.15.1+~5.0.1-4
-rjsf-validator
-ajv8]
pn node-rjsf-core <none>
pn node-rjsf-utils <none>
ii node-sanitize-h 2.17.0+~2.16.1-1
tml
ii node-semver 7.7.4+~cs9.7.4-2
ii node-sort-packa 4.0.0+~cs6.3.1-3
ge-json
ii node-source-map 4.0.1-4
-loader
ii node-stdlib [no 0.0.96+ds1+~cs0.0.429-3
de-stdlib-stats
]
ii node-style-load 3.3.1-3
er
ii node-style-mod 4.1.2~6.38.1+~cs119.80.67-1
ii node-supports-c 10.2.2+ds-3
olor
ii node-systeminfo 5.31.7-1
rmation
ii node-typestyle 2.4.0+ds+~3.0.10-2
ii node-url-parse 1.5.10+~1.4.11-1
ii node-vega [node 5.33.1+ds+~cs5.3.0-4
-vega-statistic
s]
ii node-vega-embed 6.23.0-2
ii node-vega-lite 5.18.1+~4.0.0-5
ii node-vscode-deb 1.57.0-2
ugprotocol
ii node-vscode-jso 8.2.0~next.0~1.0.0~git20230424.1320922-5
nrpc
ii node-vscode-lan 3.17.4~next.0~1.0.0~git20230424.1320922-5
guageserver-pro
tocol
ii node-webpack-me 5.8.0+~2.0.0-2
rge
ii node-worker-loa 3.0.8-5
der
ii node-ws 8.21.3+~cs14.19.1-1
ii node-xterm [nod 5.5.0-3
e-xterm-addon-w
ebgl]
pn node-xterm-addo <none>
n-canvas
pn node-xterm-addo <none>
n-fit
pn node-xterm-addo <none>
n-web-links
ii node-y-protocol 1.0.7-2
s
ii node-yjs 13.6.32-2
ii python3 [python 3.14.6-1
3-supported-min
]
ii python3-async-l 2.3.0-2
ru
ii python3-httpx 0.28.1-1.1
ii python3-ipykern 7.2.0-2
el
ii python3-jinja2 3.1.6-3
ii python3-jupyter 5.9.1-1
-core
ii python3-jupyter 0.12.0-3
-events
ii python3-jupyter 2.20.0-3
-server
ii python3-jupyter 2.28.0-1
lab-server
ii python3-noteboo 0.2.3-5
k-shim
ii python3-packagi 26.2-2
ng
ii python3-rpds-py 0.30.0-2
ii python3-setupto 78.1.1-0.1
ols
ii python3-tornado 6.5.5-4
ii python3-traitle 5.14.3+really5.14.3-5
ts
ii python3-typing- 4.16.0-4
extensions
ii ts-jest [node-t 29.1.1+~cs0.2.6-6
s-jest]
ii webpack [node-t 5.108.0+dfsg1+~cs14.7.20-2
erser-webpack-p
lugin]
ii yarnpkg 4.1.0+dfsg-8
jupyterlab recommends no packages.
jupyterlab suggests no packages.
-- no debconf information
