How to fix “Failed to install the python extension” despite python program being installed.

After activate VS code app and open my python file (.ipynb), I need to select Kernel, after then I selected Python environment, and VS code app is try to install python, however the app keep on looking for something for install python despite that the python program actually being installed, and eventually show error message: failed to install the python extension. View Jupyter log for further details.

So which means that I cannot run python program. Can you help me to solve this problem?