Can't see nbextensions page

[silverstone1903]

Hi all,

I did a clean install with Anaconda. Then I installed nbextensions via conda and then first I got a "Config option template_path not recognized by LenvsLatexExporter. Did you mean one of: template_file, template_name, template_paths?" (issue: 1529) error which is solved with downgrading nbconvert to 5.6.1 version. Then I started to get 404 errors like 404 GET /static/notebook/js/mathjaxutils.js?v=20210117203307 & 404 GET /static/components/underscore/underscore-min.map and just see a blank white page when I want to reach 127.0.0.1:8888/nbextensions (or localhost:8888/nbextensions). Also I checked it from browser console and Chrome says similar thing 👇🏻 Any suggestions? Thanks in advance!

logs with debug option;

[D 20:51:07.359 NotebookApp] [jupyter_nbextensions_configurator] Using contents: services/contents
[D 20:51:07.360 NotebookApp] 304 GET /nbextensions/ (127.0.0.1) 1.010000ms
[D 20:51:07.387 NotebookApp] 304 GET /custom/custom.css (127.0.0.1) 1.000000ms
[D 20:51:07.450 NotebookApp] 304 GET /nbextensions/nbextensions_configurator/main.js?v=20210117203307 (127.0.0.1) 1.000000ms
[D 20:51:07.452 NotebookApp] 200 GET /static/base/images/favicon.ico?v=50afa725b5de8b00030139d09b38620224d4e7dba47c07ef0e86d4643f30c9bfe6bb7e1a4a1c561aa32834480909a4b6fe7cd1e17f7159330b6b5914bf45a880 (127.0.0.1) 1.000000ms
[D 20:51:07.463 NotebookApp] 304 GET /nbextensions/nbextensions_configurator/render/render.js?v=20210117203307 (127.0.0.1) 2.000000ms
[D 20:51:07.465 NotebookApp] 304 GET /nbextensions/nbextensions_configurator/kse_components.js?v=20210117203307 (127.0.0.1) 1.000000ms
[D 20:51:07.481 NotebookApp] Using contents: services/contents
[W 20:51:07.483 NotebookApp] 404 GET /static/notebook/js/mathjaxutils.js?v=20210117203307 (127.0.0.1) 3.000000ms referer=http://127.0.0.1:8888/nbextensions/
[D 20:51:07.494 NotebookApp] 304 GET /nbextensions/nbextensions_configurator/quickhelp_shim.js?v=20210117203307 (127.0.0.1) 1.000000ms

jupyter core : 4.7.0
jupyter-notebook : 6.1.6
qtconsole : 4.7.7
ipython : 7.19.0
ipykernel : 5.3.4
jupyter client : 6.1.7
jupyter lab : 2.2.6
nbconvert : 5.6.1
ipywidgets : 7.6.3
nbformat : 5.1.2
traitlets : 5.0.5

[silverstone1903]

Found a solution via The library dependency mathjaxutils has moved in newer releases of jupyter notebook 6.x.x. Case closed 👍🏻