我收到这个错误：
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\Cristian Valiante\AppData\Roaming\Python\Python311\site-packages\traitlets\traitlets.py", line 2025, in _resolve_string
return import_item(string)
^^^^^^^^^^^^^^^^^^^
File "C:\Users\Cristian Valiante\AppData\Roaming\Python\Python311\site-packages\traitlets\utils\importstring.py", line 31, 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\Cristian Valiante\AppData\Roaming\Python\Python311\site-packages\jupyter_core\application.py", line 280, in launch_instance
super().launch_instance(argv=argv, **kwargs)
File "C:\Users\Cristian Valiante\AppData\Roaming\Python\Python311\site-packages\traitlets\config\application.py", line 1051, in launch_instance …