[Python] DirectoryNotACondaEnvironmentError: The target directory exists, but it is not a...

I've installed the Anaconda3 to use the Jupyter. The first time I open the Anaconda, I installed the Jupyter and it shows the message:



Then I clicked on "Ok" and it installed and opened without problem. But everytime I open the Anaconda, the jupyter is not installed yet, and I click to install and shows the same message, and then it installed and opened without problem.

So, my issue is to install the jupyter everytime I open the Anaconda. I can open the jupyter with the CMD. I've tried to install the jupyter in the environment on CMD, but it shows this message:

C:\Users\jp_si>conda activate base

(base) C:\Users\jp_si>conda install jupyter
Collecting package metadata (current_repodata.json): done
Solving environment: done

# All requested packages already installed.

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