Jupyter notebook not launching from anaconda

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1

When I try launch it I get this long error:

Traceback (most recent call last):
File “C:\ProgramData\anaconda3\Lib\site-packages\notebook\traittypes.py”, line 235, in _resolve_classes
klass = self._resolve_string(klass)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “C:\Users\Zeyd Ali\AppData\Roaming\Python\Python311\site-packages\traitlets\traitlets.py”, line 2009, in _resolve_string
return import_item(string)
^^^^^^^^^^^^^^^^^^^
File “C:\Users\Zeyd Ali\AppData\Roaming\Python\Python311\site-packages\traitlets\utils\importstring.py”, line 30, in import_item
module = import(package, fromlist=[obj])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ModuleNotFoundError: No module named ‘jupyter_server.contents’

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File “C:\ProgramData\anaconda3\Scripts\jupyter-notebook-script.py”, line 10, in
sys.exit(main())
^^^^^^
File “C:\Users\Zeyd Ali\AppData\Roaming\Python\Python311\site-packages\jupyter_core\application.py”, line 285, in launch_instance
return super().launch_instance(argv=argv, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File “C:\Users\Zeyd Ali\AppData\Roaming\Python\Python311\site-packages\traitlets\config\application.py”, line 1044, in launch_instance
app = cls.instance(**kwargs)
^^^^^^^^^^^^^^^^^^^^^^
File “C:\Users\Zeyd Ali\AppData\Roaming\Python\Python311\site-packages\traitlets\config\configurable.py”, line 555, in instance
inst = cls(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^
File “C:\Users\Zeyd Ali\AppData\Roaming\Python\Python311\site-packages\traitlets\traitlets.py”, line 1295, in new
inst.setup_instance(*args, **kwargs)
File “C:\Users\Zeyd Ali\AppData\Roaming\Python\Python311\site-packages\traitlets\traitlets.py”, line 1338, in setup_instance
super(HasTraits, self).setup_instance(*args, **kwargs)
File “C:\Users\Zeyd Ali\AppData\Roaming\Python\Python311\site-packages\traitlets\traitlets.py”, line 1314, in setup_instance
init(self)
File “C:\ProgramData\anaconda3\Lib\site-packages\notebook\traittypes.py”, line 226, in instance_init
self._resolve_classes()
File “C:\ProgramData\anaconda3\Lib\site-packages\notebook\traittypes.py”, line 238, in _resolve_classes
warn(f"{klass} is not importable. Is it installed?", ImportWarning)
TypeError: warn() missing 1 required keyword-only argument: ‘stacklevel’

How can I fix this?

1 Like
2

It looks like this is a known bug that the authors have fixed - it is mentioned here:

A workaround for now is to do the following and downgrade the ‘traitlets’ package:

pip uninstall traitlets
pip install traitlets==5.9.0
2 Likes
3

thank you so much is work for me

4

Thanks a lot, it works for me. I appreciate your help

5

Thank you, It worked for me.

6

Hi! Problem still not solved for me: PermissionError: [WinError 5] Access is denied: ‘c:\program files\anaconda3\lib\site-packages\traitlets-5.1.0.dist-info\COPYING.md’
Please help

7

Thank you for this… It worked for me

1 Like