在Visual Studio Code上打开ipynb，显示json

当我打开一个 ipynb 文件时，我只看到一个 json 文件.我测试了所有文件:
https://github.com/MicrosoftLearning/mslearn-ai900.git

When I open an ipynb file, I just see a json file. I tested with all files of :
https://github.com/MicrosoftLearning/mslearn-ai900.git

我的机器上有:

• 已安装 Python 3.9.6
• 使用 pip 命令安装:jupyterlab、notebook 和 voila

• Python 3.9.6 installed
• Installed with pip command : jupyterlab, notebook and voila

在 Visual Studio Code(版本 1.59.0)上:

On Visual Studio Code (version 1.59.0) :

• Python 3.9.6 64 位 是当前的解释器.
• 我可以创建一个新笔记本:"CTRL+SHIFT+P -->Jupyter:创建新的空白笔记本"我在右下角看到了Jupyter Server:local".我可以执行代码:print("Hello, Python!")，但是当我尝试保存文件时，出现此错误:
  无法注册Untitled-1":Jupyter 不支持文件名 file:///*ThePathToSave*/Test.ipynb.

• Python 3.9.6 64-bit is the current interpreter.
• I can create a new notebook : "CTRL+SHIFT+P --> Jupyter : Create new blank notebook" and I saw on the down-right "Jupyter Server:local". I can execute code : print("Hello, Python!"), but when I try to save file, I have this error :
  Failed to register 'Untitled-1' : File name file:///*ThePathToSave*/Test.ipynb is not supported by Jupyter.

已安装扩展:

• Jupyter v2021.8.1195043623
• Pylance v2021.8.1
• Python v2021.8.1105858891

内核列表:(command) jupyter kernelspec list

Available kernels:
  .net-csharp        C:\Users\antho\AppData\Roaming\jupyter\kernels\.net-csharp
  .net-fsharp        C:\Users\antho\AppData\Roaming\jupyter\kernels\.net-fsharp
  .net-powershell    C:\Users\antho\AppData\Roaming\jupyter\kernels\.net-powershell
  python3            c:\python\python39\share\jupyter\kernels\python3

感谢您的帮助.