I could not install sage on debian 13 trixie via apt, so I tried the
docker image instead.
It was working fine a few days ago, both command line and notebook
versions.
Today I am having problems with the notebook.
My command is:
sudo docker run \
--rm --interactive --tty \
--publish 8888:8888 \
--volume "$(pwd)":/home/sage/host \
sagemath/sagemath:latest \
sage-jupyter
When I run this, I get the following error message, over and over
again, a few seconds apart:
===============================
[W 2025-08-09 11:31:23.714 ServerApp] wrote error: 'Forbidden'
Traceback (most recent call last):
File "/home/sage/sage/local/var/lib/sage/venv-
python3.12.5/lib/python3.12/site-packages/tornado/web.py", line 1788,
in _execute
result = method(*self.path_args, **self.path_kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/sage/sage/local/var/lib/sage/venv-
python3.12.5/lib/python3.12/site-packages/tornado/web.py", line 3289,
in wrapper
url = self.get_login_url()
^^^^^^^^^^^^^^^^^^^^
File "/home/sage/sage/local/var/lib/sage/venv-
python3.12.5/lib/python3.12/site-
packages/jupyter_server/base/handlers.py", line 753, in get_login_url
raise web.HTTPError(403)
tornado.web.HTTPError: HTTP 403: Forbidden
[W 2025-08-09 11:31:23.717 ServerApp] 403 GET
/api/contents/host/elliptic-recurrences.ipynb/checkpoints?1754739083705
(@172.17.0.1) 3.68ms
referer=http://127.0.0.1:8888/notebooks/host/elliptic-recurrences.ipynb
===============================
It looks like it's trying to read the notebook elliptic-
recurrences.ipynb, which I was working on a few days ago. But my
understanding is that this should not be possible, because I am
starting up a new instance of the docker image, in a new container (I
checked the old one no longer exists via "docker container list --
all"). It should have completely forgotten about that notebook. It's
not even accessible in the current directory (which as you can see I
have mapped into the container via the --volume flag), because I am
starting it up in a different unrelated directory.
So what is going on? How can this instance "see" something from my
previous session? Is it somehow storing something on my actual
filesystem?
thanks
david
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