Installed jupyterlab_latex. right click offers preview, but get "Server Extension Error"

[tomPorter]

I have installed jupyterlab_latex, using both pip and "jupyter labextension install @jupyterlab/latex"

I can attach build results from the labextension install if needed.

[BrianChevalier]

What is the specific error? You might not have xelatex installed which is the default latex engine used.

[bagustris]

Same error here. Pdf appears but error message also appears.
Already set 'pdflatex' manually in jupyter_notebook_config.
This is may be the problem, no line for c.LatexConfig.latex_command=.
I added it manually and this maybe is not read by jupyter_latex.

[sugatoray]

I have done all things suggested. But still it is NOT working! Keep getting this error on asking to open the preview.

Server Extension Error
You probably do not have jupyterlab_latex installed or enabled. Please, run "pip install -U jupyterlab_latex." If that does not work, try "jupyter serverextension enable --sys-prefix jupyterlab_latex".

[lilcuttlefish]

Did anyone manage to solve this issue?

[ChasingZenith]

same here. Some more information from me

I follow the instruction to run pip install -U jupyterlab_latex which succeed.
But when I run jupyter serverextension enable --sys-prefix jupyterlab_latex I get the following error.

Log when `jupyter extention enable --sys-prefix jupyterlab_latex`

jupyter serverextension enable --sys-prefix jupyterlab_latex
Enabling: jupyterlab_latex
- Writing config: /usr/etc/jupyter
Traceback (most recent call last):
  File "/home/user/.local/bin/jupyter-serverextension", line 8, in <module>
    sys.exit(main())
  File "/home/user/.local/lib/python3.8/site-packages/jupyter_core/application.py", line 270, in launch_instance
    return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)
  File "/home/user/.local/lib/python3.8/site-packages/traitlets/config/application.py", line 845, in launch_instance
    app.start()
  File "/home/user/.local/lib/python3.8/site-packages/notebook/serverextensions.py", line 294, in start
    super(ServerExtensionApp, self).start()
  File "/home/user/.local/lib/python3.8/site-packages/jupyter_core/application.py", line 259, in start
    self.subapp.start()
  File "/home/user/.local/lib/python3.8/site-packages/notebook/serverextensions.py", line 213, in start
    self.toggle_server_extension(arg)
  File "/home/user/.local/lib/python3.8/site-packages/notebook/serverextensions.py", line 184, in toggle_server_extension
    toggle_serverextension_python(
  File "/home/user/.local/lib/python3.8/site-packages/notebook/serverextensions.py", line 74, in toggle_serverextension_python
    cm.update("jupyter_notebook_config", cfg)
  File "/home/user/.local/lib/python3.8/site-packages/notebook/config_manager.py", line 132, in update
    self.set(section_name, data)
  File "/home/user/.local/lib/python3.8/site-packages/notebook/config_manager.py", line 109, in set
    self.ensure_config_dir_exists()
  File "/home/user/.local/lib/python3.8/site-packages/notebook/config_manager.py", line 66, in ensure_config_dir_exists
    os.makedirs(self.config_dir, 0o755)
  File "/usr/lib/python3.8/os.py", line 213, in makedirs
    makedirs(head, exist_ok=exist_ok)
  File "/usr/lib/python3.8/os.py", line 223, in makedirs
    mkdir(name, mode)
PermissionError: [Errno 13] Permission denied: '/usr/etc'.

If I run this with sudo, it still do not succeed and says:

log with sudo

Traceback (most recent call last):
  File "/home/user/.local/bin/jupyter", line 5, in <module>
    from jupyter_core.command import main
ModuleNotFoundError: No module named 'jupyter_core'

[ChasingZenith]

My workaround is like this:

mkdir /usr/etc/jupyter
sudo chmod 777 /usr/etc/jupyter
jupyter serverextension enable --sys-prefix jupyterlab_latex
sudo chmod 755 /usr/etc/jupyter # which is the default file mode bit

Then everything can work fine.

I find that it wants to create put something into /usr/etc/jupyter, but get permission denied error. So I make that directory for it and change the back.

Still wondering why this happens.