I used conda update --all
on my env today - everything ran fine but now the upgraded JupyterLab does not start. Can anyone help please?
This is the error I get on invoking jupyter lab
:
Traceback (most recent call last):
File "/Users/vishad.bhalodia/anaconda3/envs/mfe_env/bin/jupyter-lab", line 6, in <module>
from jupyterlab.labapp import main
File "/Users/vishad.bhalodia/anaconda3/envs/mfe_env/lib/python3.8/site-packages/jupyterlab/labapp.py", line 15, in <module>
from jupyter_server.serverapp import flags
File "/Users/vishad.bhalodia/anaconda3/envs/mfe_env/lib/python3.8/site-packages/jupyter_server/serverapp.py", line 83, in <module>
from jupyter_server.services.sessions.sessionmanager import SessionManager
File "/Users/vishad.bhalodia/anaconda3/envs/mfe_env/lib/python3.8/site-packages/jupyter_server/services/sessions/sessionmanager.py", line 22, in <module>
from jupyter_server.traittypes import InstanceFromClasses
File "/Users/vishad.bhalodia/anaconda3/envs/mfe_env/lib/python3.8/site-packages/jupyter_server/traittypes.py", line 7, in <module>
from traitlets.utils.descriptions import describe
ModuleNotFoundError: No module named 'traitlets.utils.descriptions'
Conda Info:
active environment : mfe_env
active env location : /Users/vishad.bhalodia/anaconda3/envs/mfe_env
shell level : 1
user config file : /Users/vishad.bhalodia/.condarc
populated config files : /Users/vishad.bhalodia/.condarc
conda version : 4.11.0
conda-build version : 3.20.5
python version : 3.8.5.final.0
virtual packages : __osx=10.16=0
__unix=0=0
__archspec=1=x86_64
base environment : /Users/vishad.bhalodia/anaconda3 (writable)
conda av data dir : /Users/vishad.bhalodia/anaconda3/etc/conda
conda av metadata url : None
channel URLs : https://conda.anaconda.org/conda-forge/osx-64
https://conda.anaconda.org/conda-forge/noarch
https://conda.anaconda.org/bashtage/osx-64
https://conda.anaconda.org/bashtage/noarch
https://conda.anaconda.org/bioconda/osx-64
https://conda.anaconda.org/bioconda/noarch
https://conda.anaconda.org/akode/osx-64
https://conda.anaconda.org/akode/noarch
https://repo.anaconda.com/pkgs/main/osx-64
https://repo.anaconda.com/pkgs/main/noarch
https://repo.anaconda.com/pkgs/r/osx-64
https://repo.anaconda.com/pkgs/r/noarch
package cache : /Users/vishad.bhalodia/anaconda3/pkgs
/Users/vishad.bhalodia/.conda/pkgs
envs directories : /Users/vishad.bhalodia/anaconda3/envs
/Users/vishad.bhalodia/.conda/envs
platform : osx-64
user-agent : conda/4.11.0 requests/2.22.0 CPython/3.8.5 Darwin/21.3.0 OSX/10.16
UID:GID : 501:20
netrc file : None
offline mode : False
Output of conda list here
Thanks!