Unable to install python extension in knime 5.4.2

Hello everyone,
I searched for the problem among all existing but they are not talking about what I am facing.

I am a new user of knime and wanted to try the python scripting node (python 3).
But when trying to install I have this error:

Can someone help me figure it out please?

Try not to add the legacy python

I tried it but same thing
It doesn’t work