JupyterLab坏了

Question

我最近执行了一个更新--都是在conda中完成的。从那时起，我不能启动Jupyterlab；我试图在Jupyterlab上做一个额外的更新，没有任何乐趣。我得到了以下错误和想法。非常感谢您的帮助。

c:\users\ncosgrov\anaconda3\envs\atoti\lib\site-packages\jupyter_server\transutils.py:13: FutureWarning: The alias `_()` will be deprecated. Use `_i18n()` instead.
  warnings.warn(warn_msg, FutureWarning)
[I 2021-06-24 15:03:02.323 ServerApp] jupyter_server_mathjax | extension was successfully linked.
[I 2021-06-24 15:03:02.333 ServerApp] jupyterlab | extension was successfully linked.
[I 2021-06-24 15:03:02.333 ServerApp] jupyterlab_git | extension was successfully linked.
[W 2021-06-24 15:03:02.364 ServerApp] The 'min_open_files_limit' trait of a ServerApp instance expected an int, not the NoneType None.
Traceback (most recent call last):
  File "c:\users\ncosgrov\anaconda3\envs\atoti\lib\runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "c:\users\ncosgrov\anaconda3\envs\atoti\lib\runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "C:\Users\ncosgrov\Anaconda3\envs\atoti\Scripts\jupyter-lab.EXE\__main__.py", line 7, in <module>
  File "c:\users\ncosgrov\anaconda3\envs\atoti\lib\site-packages\jupyter_server\extension\application.py", line 518, in launch_instance
    serverapp = cls.initialize_server(argv=args)
  File "c:\users\ncosgrov\anaconda3\envs\atoti\lib\site-packages\jupyter_server\extension\application.py", line 491, in initialize_server
    find_extensions=find_extensions,
  File "c:\users\ncosgrov\anaconda3\envs\atoti\lib\site-packages\traitlets\config\application.py", line 87, in inner
    return method(app, *args, **kwargs)
  File "c:\users\ncosgrov\anaconda3\envs\atoti\lib\site-packages\jupyter_server\serverapp.py", line 1872, in initialize
    self.init_server_extensions()
  File "c:\users\ncosgrov\anaconda3\envs\atoti\lib\site-packages\jupyter_server\serverapp.py", line 1698, in init_server_extensions
    self.extension_manager.link_all_extensions(self)
  File "c:\users\ncosgrov\anaconda3\envs\atoti\lib\site-packages\jupyter_server\extension\manager.py", line 359, in link_all_extensions
    self.link_extension(name, serverapp)
  File "c:\users\ncosgrov\anaconda3\envs\atoti\lib\site-packages\jupyter_server\extension\manager.py", line 332, in link_extension
    extension = self.extensions[name]
  File "c:\users\ncosgrov\anaconda3\envs\atoti\lib\site-packages\nbclassic\nbserver.py", line 80, in extensions
    nb = self._extensions.get("nbclassic")
AttributeError: 'ExtensionManager' object has no attribute '_extensions'

Answer 1

您的nbclassic版本已过期，无法与最新的jupyter_server一起使用。使用以下命令升级到0.2.8或更高版本：

conda install "nbclassic>=0.2.8" -c conda-forge

或者如果使用pip：

pip install -U "nbclassic>=0.2.8"

如果您不使用nbclassic，也可以使用以下命令禁用它：

jupyter server extension disable nbclassic

在相关的GitHub issue中有更多信息。