What I am getting in current launches from here where at present your notebook that comes up still runs without anything in it changed:
!jupyter --version
jupyter core : 4.7.1
jupyter-notebook : 6.3.0
qtconsole : not installed
ipython : 7.26.0
ipykernel : 6.0.3
jupyter client : 6.1.12
jupyter lab : 3.1.1
nbconvert : 6.0.7
ipywidgets : 7.6.3
nbformat : 5.1.3
traitlets : 5.0.5
!jupyter labextension list
JupyterLab v3.1.1
/srv/conda/envs/notebook/share/jupyter/labextensions
jupyter-offlinenotebook v0.2.1 enabled OK
jupyterlab-link-share v0.2.0 enabled OK (python, jupyterlab-link-share)
nbdime-jupyterlab v2.1.0 enabled OK
jupyter-matplotlib v0.9.0 enabled OK
@jupyter-widgets/jupyterlab-manager v3.0.0 enabled OK (python, jupyterlab_widgets)
@jupyter-server/resource-usage v0.6.0 enabled OK (python, jupyter-resource-usage)
Other labextensions (built into JupyterLab)
app dir: /srv/conda/envs/notebook/share/jupyter/lab
Truncated pip list
%pip list
Package Version
----------------------------- -------------------
...
ipympl 0.7.0
ipython 7.26.0
ipython-genutils 0.2.0
ipywidgets 7.6.3
jedi 0.18.0
Jinja2 3.0.1
json5 0.9.5
jsonschema 3.2.0
jupyter-client 6.1.12
jupyter-core 4.7.1
jupyter-offlinenotebook 0.2.1
jupyter-resource-usage 0.6.0
jupyter-server 1.10.1
jupyter-server-mathjax 0.2.3
jupyter-telemetry 0.1.0
jupyterhub 1.4.2
jupyterlab 3.1.1
jupyterlab-link-share 0.2.0
jupyterlab-pygments 0.1.2
jupyterlab-server 2.6.1
jupyterlab-widgets 1.0.0
kiwisolver 1.3.2
Mako 1.1.4
MarkupSafe 2.0.1
matplotlib 3.4.3
matplotlib-inline 0.1.2
...