Troubleshooting missing right click menu? about jupyterlab-latex HOT 8 CLOSED

[W 09:32:26.215 LabApp] Error loading server extension jupyter_nbextensions_configurator
    Traceback (most recent call last):
      File "C:\ProgramData\Anaconda3\lib\site-packages\notebook\notebookapp.py", line 1451, in init_server_extensions
        mod = importlib.import_module(modulename)
      File "C:\ProgramData\Anaconda3\lib\importlib\__init__.py", line 126, in import_module
        return _bootstrap._gcd_import(name[level:], package, level)
      File "<frozen importlib._bootstrap>", line 994, in _gcd_import
      File "<frozen importlib._bootstrap>", line 971, in _find_and_load
      File "<frozen importlib._bootstrap>", line 953, in _find_and_load_unlocked
    ModuleNotFoundError: No module named 'jupyter_nbextensions_configurator'
[I 09:32:26.224 LabApp] JupyterLab beta preview extension loaded from C:\ProgramData\Anaconda3\lib\site-packages\jupyterlab
[I 09:32:26.224 LabApp] JupyterLab application directory is C:\ProgramData\Anaconda3\share\jupyter\lab
[W 09:32:27.299 LabApp] JupyterLab server extension not enabled, manually loading...
[I 09:32:27.300 LabApp] JupyterLab beta preview extension loaded from C:\ProgramData\Anaconda3\lib\site-packages\jupyterlab
[I 09:32:27.300 LabApp] JupyterLab application directory is C:\ProgramData\Anaconda3\share\jupyter\lab
[I 09:32:28.506 LabApp] Serving notebooks from local directory: C:\workzones\iPython
[I 09:32:28.507 LabApp] 0 active kernels
[I 09:32:28.507 LabApp] The Jupyter Notebook is running at:
[I 09:32:28.507 LabApp] http://localhost:8888/?token=307ecb56155635bbeda52c29ac95cc847d7ae88fb9c99ab2
[I 09:32:28.507 LabApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 09:32:28.511 LabApp]

    Copy/paste this URL into your browser when you connect for the first time,
    to login with a token:
        http://localhost:8888/?token=307ecb56155635bbeda52c29ac95cc847d7ae88fb9c99ab2
[I 09:32:28.635 LabApp] Accepting one-time-token-authenticated connection from ::1
[I 09:32:30.274 LabApp] Build is up to date

index.js:267 Plugin 'jupyterlab-latex:open' failed to activate.
(anonymous) @ index.js:267
09:32:29.231 index.js:268 Error: No provider for: @jupyterlab/docmanager:IDocumentManager.
    at t.e.resolveRequiredService (index.js:182)
    at index.js:140
    at Array.map (<anonymous>)
    at t.e.activatePlugin (index.js:140)
    at index.js:266
    at Array.map (<anonymous>)
    at t.e.start (index.js:265)
    at i (index.out.js:1234)
(anonymous) @ index.js:268
09:32:29.593 

C:\workzones>pip show jupyterlab_latex
Name: jupyterlab-latex
Version: 0.2.0
Summary: A Jupyter Notebook server extension which acts as an endpoint for LaTeX.
Home-page: http://jupyter.org
Author: Jupyter Development Team
Author-email: [email protected]
License: BSD
Location: c:\programdata\anaconda3\lib\site-packages
Requires: notebook

C:\workzones>jupyter labextension list
JupyterLab v0.31.4
Known labextensions:
   app dir: C:\ProgramData\Anaconda3\share\jupyter\lab
@jupyterlab/latex
        @jupyterlab/latex v0.2.0 enabled  ok

C:\workzones>pip show jupyterlab
Name: jupyterlab
Version: 0.31.4
Summary: The JupyterLab notebook server extension.
Home-page: http://jupyter.org
Author: Jupyter Development Team
Author-email: [email protected]
License: BSD
Location: c:\programdata\anaconda3\lib\site-packages
Requires: notebook, jupyterlab-launcher, ipython-genutils

C:\workzones>