Jupyter Notebook on FreeBSD 12.1 Jail. Connection to kernel fails

[leonardorame]

Hi, I'm trying to run Jupyter Notebook and JupyterLab on a FreeBSD 12.1 Jail. I've been trying to make it work since more than a week ago without success.

I installed it first using pkg install and when I found this problem I tried with pip3 install ...., but both methods ends with the same problem.

After installing and making some changes in the config file /home/jupyter/.jupyter/jupyter_notebook_config.py I can open it from a web browser. The changes are these:

c.NotebookApp.ip ='*'
c.NotebookApp.open_browser = False
c.NotebookApp.notebook_dir  = '/tmp'
c.NotebookApp.port = 8888

I can point from another machine using http://192.168.0.111:8888, and get this:

So everything seems to be working...until I try do execute a simple calc like 1+1 or print("hello world"). When I do that and press ctrl+r there's a Kernel starting, please wait..., and after a while, in the server's console there's this:

[I 16:23:09.145 NotebookApp] Creating new notebook in 
/usr/local/lib/python3.7/site-packages/jupyter_client/connect.py:164: RuntimeWarning: Failed to set sticky bit on '/usr/home/jupyter/.local/share/jupyter/runtime/kernel-67e1b082-cc4e-4b25-b5a5-a38d13fd717f.json': [Errno 79] Inappropriate file type or format: '/usr/home/jupyter/.local/share/jupyter/runtime/kernel-67e1b082-cc4e-4b25-b5a5-a38d13fd717f.json'
Probably not a big deal, but runtime files may be cleaned up periodically.
  RuntimeWarning,
[I 16:23:10.143 NotebookApp] Kernel started: 67e1b082-cc4e-4b25-b5a5-a38d13fd717f
[W 16:23:10.192 NotebookApp] 404 GET /nbextensions/widgets/notebook/js/extension.js?v=20200926161340 (192.168.0.110) 0.99ms referer=http://192.168.0.111:8888/notebooks/Untitled4.ipynb?kernel_name=python3
/usr/local/lib/python3.7/site-packages/jupyter_client/connect.py:164: RuntimeWarning: Failed to set sticky bit on '/usr/home/jupyter/.local/share/jupyter/runtime/kernel-67e1b082-cc4e-4b25-b5a5-a38d13fd717f.json': [Errno 79] Inappropriate file type or format: '/usr/home/jupyter/.local/share/jupyter/runtime/kernel-67e1b082-cc4e-4b25-b5a5-a38d13fd717f.json'
Probably not a big deal, but runtime files may be cleaned up periodically.
  RuntimeWarning,
[I 16:23:17.731 NotebookApp] Saving file at /Untitled3.ipynb
[W 16:23:31.238 NotebookApp] Replacing stale connection: 67e1b082-cc4e-4b25-b5a5-a38d13fd717f:f20bd23a2dc0450c8f9db79d7eb82a33
[W 16:23:54.305 NotebookApp] Replacing stale connection: 67e1b082-cc4e-4b25-b5a5-a38d13fd717f:f20bd23a2dc0450c8f9db79d7eb82a33
[W 16:24:10.227 NotebookApp] Timeout waiting for kernel_info reply from 67e1b082-cc4e-4b25-b5a5-a38d13fd717f
[I 16:24:10.234 NotebookApp] Starting buffering for 67e1b082-cc4e-4b25-b5a5-a38d13fd717f:f20bd23a2dc0450c8f9db79d7eb82a33
[I 16:24:10.235 NotebookApp] Restoring connection for 67e1b082-cc4e-4b25-b5a5-a38d13fd717f:f20bd23a2dc0450c8f9db79d7eb82a33

jupyter core     : 4.6.3
jupyter-notebook : 6.0.3
qtconsole        : not installed
ipython          : 7.16.1
ipykernel        : 5.3.0
jupyter client   : 6.1.3
jupyter lab      : not installed
nbconvert        : 5.6.1
ipywidgets       : not installed
nbformat         : 5.0.7
traitlets        : 4.3.3

By searching on the web I found others have a similar issue with tornado 6, but this installation is running py37-tornado-5.1.1 which is installed automatically by pkg install notebook.

Can anyone help me with this?

[leonardorame]

I can confirm it works without issues on the host, but not in a jail.