The python3 kernel is working well, but gap-4 not:
$ jupyter kernelspec list
Available kernels:
gap-4 /usr/share/jupyter/kernels/gap-4
python3 /usr/share/jupyter/kernels/python3
When I try to run any cell with GAP kernel, it is labelled by [*] and doesn’t executes.
The log of jupyter notebook:
[I 2025-08-11 23:43:33.780 ServerApp] jupyterlab | extension was successfully linked.
[I 2025-08-11 23:43:33.782 ServerApp] notebook | extension was successfully linked.
[I 2025-08-11 23:43:34.035 ServerApp] notebook_shim | extension was successfully linked.
[I 2025-08-11 23:43:34.044 ServerApp] notebook_shim | extension was successfully loaded.
[I 2025-08-11 23:43:34.045 LabApp] JupyterLab extension loaded from /usr/lib/python3.13/site-packages/jupyterlab
[I 2025-08-11 23:43:34.045 LabApp] JupyterLab application directory is /usr/share/jupyter/lab
[I 2025-08-11 23:43:34.046 LabApp] Extension Manager is 'pypi'.
[I 2025-08-11 23:43:34.080 ServerApp] jupyterlab | extension was successfully loaded.
[I 2025-08-11 23:43:34.082 ServerApp] notebook | extension was successfully loaded.
[I 2025-08-11 23:43:34.082 ServerApp] Serving notebooks from local directory: /home/boris
[I 2025-08-11 23:43:34.082 ServerApp] Jupyter Server 2.16.0 is running at:
[I 2025-08-11 23:43:34.082 ServerApp] http://localhost:8888/tree?token=851c049f1e21c88e7f18b5c1ac9e34da3d6fda005cd09d03
[I 2025-08-11 23:43:34.082 ServerApp] http://127.0.0.1:8888/tree?token=851c049f1e21c88e7f18b5c1ac9e34da3d6fda005cd09d03
[I 2025-08-11 23:43:34.082 ServerApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 2025-08-11 23:43:34.099 ServerApp]
To access the server, open this file in a browser:
file:///home/boris/.local/share/jupyter/runtime/jpserver-212762-open.html
Or copy and paste one of these URLs:
http://localhost:8888/tree?token=851c049f1e21c88e7f18b5c1ac9e34da3d6fda005cd09d03
http://127.0.0.1:8888/tree?token=851c049f1e21c88e7f18b5c1ac9e34da3d6fda005cd09d03
[W 2025-08-11 23:43:35.507 ServerApp] 404 GET /api/kernels/e136d011-91eb-4ed6-adca-7237dced2c4c?1754930615505 (127.0.0.1): Kernel does not exist: e136d011-91eb-4ed6-adca-7237dced2c4c
[W 2025-08-11 23:43:35.507 ServerApp] wrote error: 'Kernel does not exist: e136d011-91eb-4ed6-adca-7237dced2c4c'
Traceback (most recent call last):
File "/usr/lib/python3.13/site-packages/tornado/web.py", line 1790, in _execute
result = await result
^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/auth/decorator.py", line 73, in inner
return await out
^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/services/kernels/handlers.py", line 75, in get
model = await ensure_async(km.kernel_model(kernel_id))
~~~~~~~~~~~~~~~^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/services/kernels/kernelmanager.py", line 508, in kernel_model
self._check_kernel_id(kernel_id)
~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/services/kernels/kernelmanager.py", line 539, in _check_kernel_id
raise web.HTTPError(404, "Kernel does not exist: %s" % kernel_id)
tornado.web.HTTPError: HTTP 404: Not Found (Kernel does not exist: e136d011-91eb-4ed6-adca-7237dced2c4c)
[W 2025-08-11 23:43:35.509 ServerApp] 404 GET /api/kernels/e136d011-91eb-4ed6-adca-7237dced2c4c?1754930615505 (5ca3d82a9e374dd8a4d71ca0341b2731@127.0.0.1) 2.21ms referer=http://localhost:8888/notebooks/Untitled12.ipynb
[W 2025-08-11 23:43:35.853 ServerApp] 404 GET /lsp/status?1754930615842 (5ca3d82a9e374dd8a4d71ca0341b2731@127.0.0.1) 9.65ms referer=http://localhost:8888/tree
[W 2025-08-11 23:43:36.524 ServerApp] 404 GET /api/kernels/e136d011-91eb-4ed6-adca-7237dced2c4c/channels?session_id=9a9d40c9-998f-4321-897f-06223bf77422 (127.0.0.1): Kernel does not exist: e136d011-91eb-4ed6-adca-7237dced2c4c
[W 2025-08-11 23:43:36.525 ServerApp] 404 GET /api/kernels/e136d011-91eb-4ed6-adca-7237dced2c4c/channels?session_id=9a9d40c9-998f-4321-897f-06223bf77422 (5ca3d82a9e374dd8a4d71ca0341b2731@127.0.0.1) 0.88ms referer=None
[W 2025-08-11 23:43:36.543 ServerApp] 404 GET /api/kernels/e136d011-91eb-4ed6-adca-7237dced2c4c?1754930616526 (127.0.0.1): Kernel does not exist: e136d011-91eb-4ed6-adca-7237dced2c4c
[W 2025-08-11 23:43:36.543 ServerApp] wrote error: 'Kernel does not exist: e136d011-91eb-4ed6-adca-7237dced2c4c'
Traceback (most recent call last):
File "/usr/lib/python3.13/site-packages/tornado/web.py", line 1790, in _execute
result = await result
^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/auth/decorator.py", line 73, in inner
return await out
^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/services/kernels/handlers.py", line 75, in get
model = await ensure_async(km.kernel_model(kernel_id))
~~~~~~~~~~~~~~~^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/services/kernels/kernelmanager.py", line 508, in kernel_model
self._check_kernel_id(kernel_id)
~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/services/kernels/kernelmanager.py", line 539, in _check_kernel_id
raise web.HTTPError(404, "Kernel does not exist: %s" % kernel_id)
tornado.web.HTTPError: HTTP 404: Not Found (Kernel does not exist: e136d011-91eb-4ed6-adca-7237dced2c4c)
[W 2025-08-11 23:43:36.544 ServerApp] 404 GET /api/kernels/e136d011-91eb-4ed6-adca-7237dced2c4c?1754930616526 (5ca3d82a9e374dd8a4d71ca0341b2731@127.0.0.1) 1.34ms referer=http://localhost:8888/notebooks/Untitled12.ipynb
[W 2025-08-11 23:43:40.530 ServerApp] 404 GET /api/kernels/e136d011-91eb-4ed6-adca-7237dced2c4c?1754930620529 (127.0.0.1): Kernel does not exist: e136d011-91eb-4ed6-adca-7237dced2c4c
[W 2025-08-11 23:43:40.531 ServerApp] wrote error: 'Kernel does not exist: e136d011-91eb-4ed6-adca-7237dced2c4c'
Traceback (most recent call last):
File "/usr/lib/python3.13/site-packages/tornado/web.py", line 1790, in _execute
result = await result
^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/auth/decorator.py", line 73, in inner
return await out
^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/services/kernels/handlers.py", line 75, in get
model = await ensure_async(km.kernel_model(kernel_id))
~~~~~~~~~~~~~~~^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/services/kernels/kernelmanager.py", line 508, in kernel_model
self._check_kernel_id(kernel_id)
~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/services/kernels/kernelmanager.py", line 539, in _check_kernel_id
raise web.HTTPError(404, "Kernel does not exist: %s" % kernel_id)
tornado.web.HTTPError: HTTP 404: Not Found (Kernel does not exist: e136d011-91eb-4ed6-adca-7237dced2c4c)
[W 2025-08-11 23:43:40.531 ServerApp] 404 GET /api/kernels/e136d011-91eb-4ed6-adca-7237dced2c4c?1754930620529 (5ca3d82a9e374dd8a4d71ca0341b2731@127.0.0.1) 1.26ms referer=http://localhost:8888/notebooks/Untitled12.ipynb
[W 2025-08-11 23:43:41.427 ServerApp] 404 GET /lsp/status?1754930621424 (5ca3d82a9e374dd8a4d71ca0341b2731@127.0.0.1) 1.61ms referer=http://localhost:8888/notebooks/Untitled12.ipynb
GAP Jupyter Kernel Starting using gap
[I 2025-08-11 23:43:41.959 ServerApp] Kernel started: 093f7ca0-da41-4393-9a6d-b2bb7b7c07ce
[W 2025-08-11 23:43:43.253 ServerApp] 404 GET /api/kernels/e136d011-91eb-4ed6-adca-7237dced2c4c/channels?session_id=9a9d40c9-998f-4321-897f-06223bf77422 (127.0.0.1): Kernel does not exist: e136d011-91eb-4ed6-adca-7237dced2c4c
[W 2025-08-11 23:43:43.253 ServerApp] 404 GET /api/kernels/e136d011-91eb-4ed6-adca-7237dced2c4c/channels?session_id=9a9d40c9-998f-4321-897f-06223bf77422 (5ca3d82a9e374dd8a4d71ca0341b2731@127.0.0.1) 0.99ms referer=None
[W 2025-08-11 23:43:43.259 ServerApp] 404 GET /api/kernels/e136d011-91eb-4ed6-adca-7237dced2c4c?1754930623256 (127.0.0.1): Kernel does not exist: e136d011-91eb-4ed6-adca-7237dced2c4c
[W 2025-08-11 23:43:43.259 ServerApp] wrote error: 'Kernel does not exist: e136d011-91eb-4ed6-adca-7237dced2c4c'
Traceback (most recent call last):
File "/usr/lib/python3.13/site-packages/tornado/web.py", line 1790, in _execute
result = await result
^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/auth/decorator.py", line 73, in inner
return await out
^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/services/kernels/handlers.py", line 75, in get
model = await ensure_async(km.kernel_model(kernel_id))
~~~~~~~~~~~~~~~^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/services/kernels/kernelmanager.py", line 508, in kernel_model
self._check_kernel_id(kernel_id)
~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/services/kernels/kernelmanager.py", line 539, in _check_kernel_id
raise web.HTTPError(404, "Kernel does not exist: %s" % kernel_id)
tornado.web.HTTPError: HTTP 404: Not Found (Kernel does not exist: e136d011-91eb-4ed6-adca-7237dced2c4c)
[W 2025-08-11 23:43:43.261 ServerApp] 404 GET /api/kernels/e136d011-91eb-4ed6-adca-7237dced2c4c?1754930623256 (5ca3d82a9e374dd8a4d71ca0341b2731@127.0.0.1) 2.04ms referer=http://localhost:8888/notebooks/Untitled12.ipynb
true
[I 2025-08-11 23:43:43.640 ServerApp] Connecting to kernel 093f7ca0-da41-4393-9a6d-b2bb7b7c07ce.
[I 2025-08-11 23:43:43.645 ServerApp] Connecting to kernel 093f7ca0-da41-4393-9a6d-b2bb7b7c07ce.
[I 2025-08-11 23:43:43.651 ServerApp] Connecting to kernel 093f7ca0-da41-4393-9a6d-b2bb7b7c07ce.
[I 2025-08-11 23:43:44.544 ServerApp] Connecting to kernel 093f7ca0-da41-4393-9a6d-b2bb7b7c07ce.
[I 2025-08-11 23:43:46.358 ServerApp] Connecting to kernel 093f7ca0-da41-4393-9a6d-b2bb7b7c07ce.
[W 2025-08-11 23:43:47.302 ServerApp] 404 GET /api/kernels/e136d011-91eb-4ed6-adca-7237dced2c4c?1754930627301 (127.0.0.1): Kernel does not exist: e136d011-91eb-4ed6-adca-7237dced2c4c
[W 2025-08-11 23:43:47.302 ServerApp] wrote error: 'Kernel does not exist: e136d011-91eb-4ed6-adca-7237dced2c4c'
Traceback (most recent call last):
File "/usr/lib/python3.13/site-packages/tornado/web.py", line 1790, in _execute
result = await result
^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/auth/decorator.py", line 73, in inner
return await out
^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/services/kernels/handlers.py", line 75, in get
model = await ensure_async(km.kernel_model(kernel_id))
~~~~~~~~~~~~~~~^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/services/kernels/kernelmanager.py", line 508, in kernel_model
self._check_kernel_id(kernel_id)
~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/services/kernels/kernelmanager.py", line 539, in _check_kernel_id
raise web.HTTPError(404, "Kernel does not exist: %s" % kernel_id)
tornado.web.HTTPError: HTTP 404: Not Found (Kernel does not exist: e136d011-91eb-4ed6-adca-7237dced2c4c)
[W 2025-08-11 23:43:47.303 ServerApp] 404 GET /api/kernels/e136d011-91eb-4ed6-adca-7237dced2c4c?1754930627301 (5ca3d82a9e374dd8a4d71ca0341b2731@127.0.0.1) 1.36ms referer=http://localhost:8888/tree
[W 2025-08-11 23:43:48.154 ServerApp] Nudge: attempt 10 on kernel 093f7ca0-da41-4393-9a6d-b2bb7b7c07ce
[W 2025-08-11 23:43:48.165 ServerApp] Nudge: attempt 10 on kernel 093f7ca0-da41-4393-9a6d-b2bb7b7c07ce
[W 2025-08-11 23:43:49.065 ServerApp] Nudge: attempt 10 on kernel 093f7ca0-da41-4393-9a6d-b2bb7b7c07ce
[W 2025-08-11 23:43:50.873 ServerApp] Nudge: attempt 10 on kernel 093f7ca0-da41-4393-9a6d-b2bb7b7c07ce
[W 2025-08-11 23:43:53.164 ServerApp] Nudge: attempt 20 on kernel 093f7ca0-da41-4393-9a6d-b2bb7b7c07ce
[W 2025-08-11 23:43:53.174 ServerApp] Nudge: attempt 20 on kernel 093f7ca0-da41-4393-9a6d-b2bb7b7c07ce
[W 2025-08-11 23:43:53.837 ServerApp] 404 GET /api/kernels/e136d011-91eb-4ed6-adca-7237dced2c4c/channels?session_id=239833fb-3614-4299-a84f-beadcd43156c (127.0.0.1): Kernel does not exist: e136d011-91eb-4ed6-adca-7237dced2c4c
[W 2025-08-11 23:43:53.838 ServerApp] 404 GET /api/kernels/e136d011-91eb-4ed6-adca-7237dced2c4c/channels?session_id=239833fb-3614-4299-a84f-beadcd43156c (5ca3d82a9e374dd8a4d71ca0341b2731@127.0.0.1) 1.06ms referer=None
[W 2025-08-11 23:43:53.841 ServerApp] 404 GET /api/kernels/e136d011-91eb-4ed6-adca-7237dced2c4c?1754930633839 (127.0.0.1): Kernel does not exist: e136d011-91eb-4ed6-adca-7237dced2c4c
[W 2025-08-11 23:43:53.841 ServerApp] wrote error: 'Kernel does not exist: e136d011-91eb-4ed6-adca-7237dced2c4c'
Traceback (most recent call last):
File "/usr/lib/python3.13/site-packages/tornado/web.py", line 1790, in _execute
result = await result
^^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/auth/decorator.py", line 73, in inner
return await out
^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/services/kernels/handlers.py", line 75, in get
model = await ensure_async(km.kernel_model(kernel_id))
~~~~~~~~~~~~~~~^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/services/kernels/kernelmanager.py", line 508, in kernel_model
self._check_kernel_id(kernel_id)
~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^
File "/usr/lib/python3.13/site-packages/jupyter_server/services/kernels/kernelmanager.py", line 539, in _check_kernel_id
raise web.HTTPError(404, "Kernel does not exist: %s" % kernel_id)
tornado.web.HTTPError: HTTP 404: Not Found (Kernel does not exist: e136d011-91eb-4ed6-adca-7237dced2c4c)
[W 2025-08-11 23:43:53.842 ServerApp] 404 GET /api/kernels/e136d011-91eb-4ed6-adca-7237dced2c4c?1754930633839 (5ca3d82a9e374dd8a4d71ca0341b2731@127.0.0.1) 1.79ms referer=http://localhost:8888/tree
[W 2025-08-11 23:43:54.077 ServerApp] Nudge: attempt 20 on kernel 093f7ca0-da41-4393-9a6d-b2bb7b7c07ce
[W 2025-08-11 23:43:55.888 ServerApp] Nudge: attempt 20 on kernel 093f7ca0-da41-4393-9a6d-b2bb7b7c07ce
[W 2025-08-11 23:43:58.174 ServerApp] Nudge: attempt 30 on kernel 093f7ca0-da41-4393-9a6d-b2bb7b7c07ce
[W 2025-08-11 23:43:58.184 ServerApp] Nudge: attempt 30 on kernel 093f7ca0-da41-4393-9a6d-b2bb7b7c07ce
[W 2025-08-11 23:43:59.087 ServerApp] Nudge: attempt 30 on kernel 093f7ca0-da41-4393-9a6d-b2bb7b7c07ce
^C[I 2025-08-11 23:44:00.548 ServerApp] interrupted
[I 2025-08-11 23:44:00.548 ServerApp] Serving notebooks from local directory: /home/boris
1 active kernel
Jupyter Server 2.16.0 is running at:
http://localhost:8888/tree?token=851c049f1e21c88e7f18b5c1ac9e34da3d6fda005cd09d03
http://127.0.0.1:8888/tree?token=851c049f1e21c88e7f18b5c1ac9e34da3d6fda005cd09d03
Shut down this Jupyter server (y/[n])? [W 2025-08-11 23:44:00.900 ServerApp] Nudge: attempt 30 on kernel 093f7ca0-da41-4393-9a6d-b2bb7b7c07ce
y
[C 2025-08-11 23:44:02.329 ServerApp] Shutdown confirmed
[I 2025-08-11 23:44:02.329 ServerApp] Shutting down 3 extensions
[I 2025-08-11 23:44:02.330 ServerApp] Shutting down 1 kernel
[I 2025-08-11 23:44:02.330 ServerApp] Kernel shutdown: 093f7ca0-da41-4393-9a6d-b2bb7b7c07ce
[W 2025-08-11 23:44:03.186 ServerApp] Nudge: attempt 40 on kernel 093f7ca0-da41-4393-9a6d-b2bb7b7c07ce
[W 2025-08-11 23:44:03.197 ServerApp] Nudge: attempt 40 on kernel 093f7ca0-da41-4393-9a6d-b2bb7b7c07ce
[W 2025-08-11 23:44:04.099 ServerApp] Nudge: attempt 40 on kernel 093f7ca0-da41-4393-9a6d-b2bb7b7c07ce
The log of jupyter notebook –debug: https://github.com/user-attachments/files/21717077/jupyter-debug.log