Dependency error with MarkupSafe

Env python env : new conda env with python=3.8 jupyter : --version

IPython          : 8.0.1
ipykernel        : 6.9.1
ipywidgets       : not installed
jupyter_client   : 7.1.2
jupyter_core     : 4.9.2
jupyter_server   : 1.13.5
jupyterlab       : 2.3.2
nbclient         : not installed
nbconvert        : 5.6.1
nbformat         : 4.4.0
notebook         : 6.4.8
qtconsole        : not installed
traitlets        : 5.1.1

Reproduce Install jupyter and kale by method in README.md Use command related with jupyter labextension ex:

> $jupyter labextension list
>
Traceback (most recent call last):
  File "/home/junpyo/.conda/envs/ranix/lib/python3.8/site-packages/jupyterlab_server/server.py", line 14, in <module>
    from notebook.base.handlers import (
  File "/home/junpyo/.conda/envs/ranix/lib/python3.8/site-packages/notebook/base/handlers.py", line 21, in <module>
    from jinja2 import TemplateNotFound
  File "/home/junpyo/.conda/envs/ranix/lib/python3.8/site-packages/jinja2/__init__.py", line 12, in <module>
    from .environment import Environment
  File "/home/junpyo/.conda/envs/ranix/lib/python3.8/site-packages/jinja2/environment.py", line 25, in <module>
    from .defaults import BLOCK_END_STRING
  File "/home/junpyo/.conda/envs/ranix/lib/python3.8/site-packages/jinja2/defaults.py", line 3, in <module>
    from .filters import FILTERS as DEFAULT_FILTERS  # noqa: F401
  File "/home/junpyo/.conda/envs/ranix/lib/python3.8/site-packages/jinja2/filters.py", line 13, in <module>
    from markupsafe import soft_unicode
ImportError: cannot import name 'soft_unicode' from 'markupsafe' (/home/junpyo/.conda/envs/ranix/lib/python3.8/site-packages/markupsafe/__init__.py)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/junpyo/.conda/envs/ranix/bin/jupyter-labextension", line 5, in <module>
    from jupyterlab.labextensions import main
  File "/home/junpyo/.conda/envs/ranix/lib/python3.8/site-packages/jupyterlab/labextensions.py", line 16, in <module>
    from .commands import (
  File "/home/junpyo/.conda/envs/ranix/lib/python3.8/site-packages/jupyterlab/commands.py", line 29, in <module>
    from jupyterlab_server.process import which, Process, WatchHelper, list2cmdline
  File "/home/junpyo/.conda/envs/ranix/lib/python3.8/site-packages/jupyterlab_server/__init__.py", line 4, in <module>
    from .app import LabServerApp
  File "/home/junpyo/.conda/envs/ranix/lib/python3.8/site-packages/jupyterlab_server/app.py", line 9, in <module>
    from .server import ServerApp
  File "/home/junpyo/.conda/envs/ranix/lib/python3.8/site-packages/jupyterlab_server/server.py", line 26, in <module>
    from jupyter_server.base.handlers import (                          # noqa
  File "/home/junpyo/.conda/envs/ranix/lib/python3.8/site-packages/jupyter_server/base/handlers.py", line 20, in <module>
    from jinja2 import TemplateNotFound
  File "/home/junpyo/.conda/envs/ranix/lib/python3.8/site-packages/jinja2/__init__.py", line 12, in <module>
    from .environment import Environment
  File "/home/junpyo/.conda/envs/ranix/lib/python3.8/site-packages/jinja2/environment.py", line 25, in <module>
    from .defaults import BLOCK_END_STRING
  File "/home/junpyo/.conda/envs/ranix/lib/python3.8/site-packages/jinja2/defaults.py", line 3, in <module>
    from .filters import FILTERS as DEFAULT_FILTERS  # noqa: F401
  File "/home/junpyo/.conda/envs/ranix/lib/python3.8/site-packages/jinja2/filters.py", line 13, in <module>
    from markupsafe import soft_unicode
ImportError: cannot import name 'soft_unicode' from 'markupsafe' (/home/junpyo/.conda/envs/ranix/lib/python3.8/site-packages/markupsafe/__init__.py)

Solution downgrade MarkupSafe to <= 2.0.1 it works fine in my case.. I don't know the exact version dependency

pip install MarkupSafe==2.0.1

kubeflow-kale / kale

Dependency error with MarkupSafe #407