Jupyter server fails to start pycharm
python - PyCharm Error when setting remote interpreter -> Run Error: Jupyter server process failed to start due to path mismatch issue - Stack Overflow
python - Jupyter server failed - Stack Overflow
dataspell - How to fix Jupyter server error "Process failed to start Resolved value for exe path is null"? - Stack Overflow
You just have to set a Python Interpreter for the project.
Preferences -> Python Interpreter (under Project Workspace) -> Select or Add an interpreter
Note: Then after that select Managed: from the top left menu to choose Jupyter server automatically and start it automatically. Other wise you need to start Jupyter manually and feed the tokens at run time.
I faced the same issue and finally realized that the problem was the Interpreter misconfiguration.
Download Anaconda.
Install Anaconda using the installation instructions.
Run Anaconda Navigator and in the left hand-side, click on the "Environments" tab.
In this section you can see the existing "Environments" or create a new environment, the default mode is base (root).
Open DataSpell, go to the Interpreter and select the environment you see in number 4.
File | Settings | Project | Python Interpreter for Windows and Linux
DataSpell | Preferences | Project | Python Interpreter for macOS