'Schema not found' with python3.13.0 while launching "jupyter notebook"

[SanjeevYaswanth]

Installed Python 3.13.0
Installed jupyter and notebook packages with 3.13.0 venv
Ran jupyter notebook

Facing the below Schema not found errors and jupyter page is hung with logo

[W 2025-02-18 16:30:22.742 JupyterNotebookApp] 'kernel_manager_class' has moved from NotebookApp to ServerApp. This config will be passed to ServerApp. Be sure to update your config before our next release.
[W 2025-02-18 16:30:22.744 ServerApp] notebook | error linking extension: The 'kernel_manager_class' trait of <jupyter_server.serverapp.ServerApp object at 0x7f5c5488de80> instance must be a type, but 'notebook.services.kernels.kernelmanager.AsyncMappingKernelManager' could not be imported
    Traceback (most recent call last):
      File "/cli/python-packages/site-packages/traitlets/traitlets.py", line 2139, in validate
        value = self._resolve_string(value)
      File "/cli/python-packages/site-packages/traitlets/traitlets.py", line 2015, in _resolve_string
        return import_item(string)
      File "/cli/python-packages/site-packages/traitlets/utils/importstring.py", line 33, in import_item
        module = __import__(package, fromlist=[obj])
    ModuleNotFoundError: No module named 'notebook.services'
    
    The above exception was the direct cause of the following exception:
    
    Traceback (most recent call last):
      File "/cli/python-packages/site-packages/jupyter_server/extension/manager.py", line 346, in link_extension
        extension.link_all_points(self.serverapp)
        ~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^
      File "/cli/python-packages/site-packages/jupyter_server/extension/manager.py", line 228, in link_all_points
        self.link_point(point_name, serverapp)
        ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^
      File "/cli/python-packages/site-packages/jupyter_server/extension/manager.py", line 218, in link_point
        point.link(serverapp)
        ~~~~~~~~~~^^^^^^^^^^^
      File "/cli/python-packages/site-packages/jupyter_server/extension/manager.py", line 140, in link
        linker(serverapp)
        ~~~~~~^^^^^^^^^^^
      File "/cli/python-packages/site-packages/jupyter_server/extension/application.py", line 412, in _link_jupyter_server_extension
        self.serverapp.update_config(self.config)
        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
      File "/cli/python-packages/site-packages/traitlets/config/configurable.py", line 244, in update_config
        self._load_config(config)
        ~~~~~~~~~~~~~~~~~^^^^^^^^
      File "/cli/python-packages/site-packages/traitlets/config/configurable.py", line 193, in _load_config
        setattr(self, name, deepcopy(config_value))
        ~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
      File "/cli/python-packages/site-packages/traitlets/traitlets.py", line 716, in __set__
        self.set(obj, value)
        ~~~~~~~~^^^^^^^^^^^^
      File "/cli/python-packages/site-packages/traitlets/traitlets.py", line 690, in set
        new_value = self._validate(obj, value)
      File "/cli/python-packages/site-packages/traitlets/traitlets.py", line 722, in _validate
        value = self.validate(obj, value)
      File "/cli/python-packages/site-packages/traitlets/traitlets.py", line 2141, in validate
        raise TraitError(
        ...<2 lines>...
        ) from e
    traitlets.traitlets.TraitError: The 'kernel_manager_class' trait of <jupyter_server.serverapp.ServerApp object at 0x7f5c5488de80> instance must be a type, but 'notebook.services.kernels.kernelmanager.AsyncMappingKernelManager' could not be imported
[I 2025-02-18 16:30:22.788 ServerApp] notebook | extension was successfully loaded.
[I 2025-02-18 16:30:22.788 ServerApp] The port 8888 is already in use, trying another port.
[I 2025-02-18 16:30:22.788 ServerApp] The port 8889 is already in use, trying another port.
[I 2025-02-18 16:30:22.788 ServerApp] Serving notebooks from local directory: /bin
[I 2025-02-18 16:30:22.788 ServerApp] Jupyter Server 2.15.0 is running at:
[I 2025-02-18 16:30:22.788 ServerApp] http://localhost:8890/tree?token=5a7df587a4f7c751dc951ffc9c53b0cf3c753b846b638cec
[I 2025-02-18 16:30:22.788 ServerApp]     http://127.0.0.1:8890/tree?token=5a7df587a4f7c751dc951ffc9c53b0cf3c753b846b638cec
[I 2025-02-18 16:30:22.788 ServerApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
[C 2025-02-18 16:30:22.818 ServerApp] 
    
    To access the server, open this file in a browser:
        file:///home/.local/share/jupyter/runtime/jpserver-1551240-open.html
    Or copy and paste one of these URLs:
        http://localhost:8890/tree?token=5a7df587a4f7c751dc951ffc9c53b0cf3c753b846b638cec
        http://127.0.0.1:8890/tree?token=5a7df587a4f7c751dc951ffc9c53b0cf3c753b846b638cec
[W 2025-02-18 16:30:30.682 JupyterNotebookApp] Missing or misshapen translation settings schema:
    HTTP 404: Not Found (Schema not found: /tps/lnx64/python-3.13.0/share/jupyter/lab/schemas/@jupyterlab/translation-extension/plugin.json)
[W 2025-02-18 16:30:30.682 JupyterNotebookApp] Settings directory does not exist at /tps/lnx64/python-3.13.0/share/jupyter/lab/schemas
[W 2025-02-18 16:30:30.774 JupyterNotebookApp] Missing or misshapen translation settings schema:
    HTTP 404: Not Found (Schema not found: /tps/lnx64/python-3.13.0/share/jupyter/lab/schemas/@jupyterlab/translation-extension/plugin.json)
[W 2025-02-18 16:30:30.775 ServerApp] 404 GET /lab/api/settings/@jupyter-notebook/application-extension:shell?1739876430756 (127.0.0.1): Schema not found: /tps/lnx64/python-3.13.0/share/jupyter/lab/schemas/@jupyter-notebook/application-extension/shell.json
[W 2025-02-18 16:30:30.775 JupyterNotebookApp] wrote error: 'Schema not found: /tps/lnx64/python-3.13.0/share/jupyter/lab/schemas/@jupyter-notebook/application-extension/shell.json'
    Traceback (most recent call last):
      File "/cli/python-packages/site-packages/tornado/web.py", line 1788, in _execute
        result = method(*self.path_args, **self.path_kwargs)
      File "/cli/python-packages/site-packages/tornado/web.py", line 3301, in wrapper
        return method(self, *args, **kwargs)
      File "/cli/python-packages/site-packages/jupyterlab_server/settings_handler.py", line 58, in get
        result, warnings = get_settings(
                           ~~~~~~~~~~~~^
            self.app_settings_dir,
            ^^^^^^^^^^^^^^^^^^^^^^
        ...<6 lines>...
            ids_only=ids_only,
            ^^^^^^^^^^^^^^^^^^
        )
        ^
      File "/cli/python-packages/site-packages/jupyterlab_server/settings_utils.py", line 385, in get_settings
        schema, version = _get_schema(schemas_dir, schema_name, overrides, labextensions_path)
                          ~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
      File "/cli/python-packages/site-packages/jupyterlab_server/settings_utils.py", line 61, in _get_schema
        raise web.HTTPError(404, notfound_error % path)

Could any one help on these errors???

[andrii-i]

Hi @SanjeevYaswanth. Thank you for creating this issue. I was not able to reproduce this in notebook 7.3.2. Could you please advise which version of notebook you are using? You can find out by running jupyter --version or jupyter troubleshoot.

There was a similarly-looking issue #2875. Could you please give it and this particular suggestion a look #2875 (comment) and see if it would help?