At the wrong when update jupyterlab
RemoveError: 'setuptools' is a dependency of conda and always be removed from conda' s operating environment.
Try the first method:
PIP uninstall install setuptools
and conda install setuptools , useless, still an error
The second:
conda update conda
no, at the same error
The third:
conda update -- force conda
success, no error.
Conda install numpy, numpy, numpy, numpy, numpy, numpy, numpy. Looks like it worked out.