由于应用程序笔记本启动错误，我无法在 Anaconda 中打开 Jupyter 笔记本

Question

我正在学习 anaconda，最初一切都很好，但现在 jupyter 笔记本无法工作，我很震惊，请帮助我尝试重新安装，我得到的每种方法都不起作用。下面是我收到的错误消息

Traceback (most recent call last):
File "C:\Users\Admin\anaconda3\Lib\site-packages\notebook\traittypes.py", line 235, in _resolve_classes
klass = self._resolve_string(klass)
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\Admin\AppData\Roaming\Python\Python311\site-packages\traitlets\traitlets.py", line 2009, in _resolve_string
return import_item(string)
^^^^^^^^^^^^^^^^^^^
File "C:\Users\Admin\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:\Users\Admin\anaconda3\Scripts\jupyter-notebook-script.py", line 10, in 
sys.exit(main())
^^^^^^
File "C:\Users\Admin\anaconda3\Lib\site-packages\jupyter_core\application.py", line 277, in launch_instance
return super().launch_instance(argv=argv, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\Admin\AppData\Roaming\Python\Python311\site-packages\traitlets\config\application.py", line 1044, in launch_instance
app = cls.instance(**kwargs)
^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\Admin\AppData\Roaming\Python\Python311\site-packages\traitlets\config\configurable.py", line 555, in instance
inst = cls(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^
File "C:\Users\Admin\AppData\Roaming\Python\Python311\site-packages\traitlets\traitlets.py", line 1295, in __new__
inst.setup_instance(*args, **kwargs)
File "C:\Users\Admin\AppData\Roaming\Python\Python311\site-packages\traitlets\traitlets.py", line 1338, in setup_instance
super(HasTraits, self).setup_instance(*args, **kwargs)
File "C:\Users\Admin\AppData\Roaming\Python\Python311\site-packages\traitlets\traitlets.py", line 1314, in setup_instance
init(self)
File "C:\Users\Admin\anaconda3\Lib\site-packages\notebook\traittypes.py", line 226, in instance_init
self._resolve_classes()
File "C:\Users\Admin\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'

Answer 1

我大概有同样的问题，根据 esqew 链接的报告中的讨论，我修复了它

conda install traitlets==5.9.0 -c conda-forge

Answer 2

以下解决了我的问题：

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pip install --upgrade notebook\n

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前：

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\xe2\x9d\xaf pip freeze | grep notebook\nnotebook==6.4.0\n

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后：

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\xe2\x9d\xaf pip freeze | grep notebook\nnotebook==7.0.5\n

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在这里您可以看到问题：\n https://github.com/jupyter/notebook/pull/7051

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