Package: python3-nbclassic
Severity: important

Dear Maintainer,

while trying start a classic notebook from jupyterhub, I got this error message

[D 2025-05-17 08:32:43.583 oauthlib.oauth2.rfc6749.endpoints.token token:112] Dispatching grant_type authorization_code request to <oauthlib.oauth2.rfc6749.grant_types.authorization_code.AuthorizationCodeGrant object at 0x7f9cfee01a90>.
[D 2025-05-17 08:32:43.583 JupyterHub provider:58] authenticate_client <oauthlib.Request SANITIZED>
[D 2025-05-17 08:32:43.621 oauthlib.oauth2.rfc6749.grant_types.authorization_code authorization_code:533] Using provided redirect_uri /user/picca/oauth_callback
[D 2025-05-17 08:32:43.621 JupyterHub provider:117] confirm_redirect_uri: client_id=jupyterhub-user-picca, redirect_uri=/user/picca/oauth_callback
[D 2025-05-17 08:32:43.621 oauthlib.oauth2.rfc6749.grant_types.authorization_code authorization_code:301] Token request validation ok for <oauthlib.Request SANITIZED>.
[D 2025-05-17 08:32:43.622 JupyterHub provider:345] Saving bearer token {'access_token': 'REDACTED', 'expires_in': 1209600, 'token_type': 'Bearer', 'scope': 'read:users:groups!user access:servers!server=picca/ read:users:name!user', 'refresh_token': '
REDACTED'}
[D 2025-05-17 08:32:43.635 JupyterHub provider:205] Deleting oauth code wT2... for jupyterhub-user-picca
[I 2025-05-17 08:32:43.650 JupyterHub log:192] 200 POST /hub/api/oauth2/token (picca@127.0.0.1) 71.28ms
[D 2025-05-17 08:32:43.657 JupyterHub base:366] Recording first activity for <APIToken('gEuc...', user='picca', client_id='jupyterhub-user-picca')>
[I 2025-05-17 08:32:43.665 JupyterHub log:192] 200 GET /hub/api/user (picca@127.0.0.1) 11.88ms
[I 2025-05-17 08:32:43.666 ServerApp] Logged-in user picca
[I 2025-05-17 08:32:43.667 ServerApp] Setting new xsrf cookie for b'e3f475fdd7ac48f99c702f8ba5d39f8b:4781760833cd6eda1d014f07eb2f352cdadc3de66e9cd241b40346af670fad8b' {'path': '/user/picca/'}
[I 2025-05-17 08:32:43.671 ServerApp] 302 GET /user/picca/oauth_callback?code=[secret]&state=[secret] -> /user/picca/tree? (picca@::ffff:127.0.0.1) 93.66ms
/usr/lib/python3/dist-packages/nbclassic/tree/handlers.py:51: RuntimeWarning: coroutine 'AsyncFileContentsManager.dir_exists' was never awaited
if cm.dir_exists(path=path):
RuntimeWarning: Enable tracemalloc to get the object allocation traceback /usr/lib/python3/dist-packages/nbclassic/tree/handlers.py:52: RuntimeWarning: coroutine 'AsyncFileContentsManager.is_hidden' was never awaited
if cm.is_hidden(path) and not cm.allow_hidden:
RuntimeWarning: Enable tracemalloc to get the object allocation traceback
[I 2025-05-17 08:32:43.691 NotebookApp] Refusing to serve hidden directory, via 404 Error


I am wondering if nbclassic is compatible with all the jupyter stack currently available in trixie.

Cheers

Fred

-- System Information:
Debian Release: 13.0
APT prefers unstable
APT policy: (500, 'unstable'), (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.12.27-amd64 (SMP w/6 CPU threads; PREEMPT)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.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

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

To reproduce this issue, just run

jupyter nblassic

picca@page:~$ jupyter nbclassic
[W 2025-05-21 08:35:39.406 ServerApp] A `_jupyter_server_extension_points` function was not found in nbclassic. Instead, a `_jupyter_server_extension_paths` function was found and will be used for now. This function name will be deprecated in future
releases of Jupyter Server.
[W 2025-05-21 08:35:39.411 ServerApp] A `_jupyter_server_extension_points` function was not found in notebook_shim. Instead, a `_jupyter_server_extension_paths` function was found and will be used for now. This function name will be deprecated in future
releases of Jupyter Server.
[I 2025-05-21 08:35:39.414 ServerApp] jupyter_server_terminals | extension was successfully linked.
[I 2025-05-21 08:35:39.563 ServerApp] nbclassic | extension was successfully linked.
[I 2025-05-21 08:35:39.565 ServerApp] notebook_shim | extension was successfully linked.
[I 2025-05-21 08:35:39.625 ServerApp] notebook_shim | extension was successfully loaded.
[I 2025-05-21 08:35:39.626 ServerApp] jupyter_server_terminals | extension was successfully loaded.
[I 2025-05-21 08:35:39.629 ServerApp] nbclassic | extension was successfully loaded.
[I 2025-05-21 08:35:39.632 ServerApp] Serving notebooks from local directory: /home/picca
[I 2025-05-21 08:35:39.632 ServerApp] Jupyter Server 2.15.0 is running at:
[I 2025-05-21 08:35:39.632 ServerApp] http://localhost:8888/tree?token=5990de7375c2b246397260a5e97acc68a73c7d20bd1fd67c
[I 2025-05-21 08:35:39.632 ServerApp] http://127.0.0.1:8888/tree?token=5990de7375c2b246397260a5e97acc68a73c7d20bd1fd67c
[I 2025-05-21 08:35:39.632 ServerApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 2025-05-21 08:35:39.650 ServerApp]

To access the server, open this file in a browser:
file:///home/picca/.local/share/jupyter/runtime/jpserver-127457-open.html
Or copy and paste one of these URLs:
http://localhost:8888/tree?token=5990de7375c2b246397260a5e97acc68a73c7d20bd1fd67c
http://127.0.0.1:8888/tree?token=5990de7375c2b246397260a5e97acc68a73c7d20bd1fd67c
/usr/lib/python3/dist-packages/nbclassic/tree/handlers.py:51: RuntimeWarning: coroutine 'AsyncFileContentsManager.dir_exists' was never awaited
if cm.dir_exists(path=path):
RuntimeWarning: Enable tracemalloc to get the object allocation traceback /usr/lib/python3/dist-packages/nbclassic/tree/handlers.py:52: RuntimeWarning: coroutine 'AsyncFileContentsManager.is_hidden' was never awaited
if cm.is_hidden(path) and not cm.allow_hidden:
RuntimeWarning: Enable tracemalloc to get the object allocation traceback
[I 2025-05-21 08:35:40.964 NotebookApp] Refusing to serve hidden directory, via 404 Error
[W 2025-05-21 08:35:41.029 NotebookApp] 404 GET /tree?token=[secret] (ba00f11359c44e76a06eba2a00bf29a5@127.0.0.1) 68.84ms referer=None

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)