@AnthonyCREng as far as I can see the example with the latest components does use the bundled KNIME Python environment (What’s New in KNIME Analytics Platform 4.6 and KNIME Server 4.15 | KNIME).
So you might have to install this extension: KNIME Python Integration (Labs) – KNIME Hub
Then you should check if this sample workflow would run. So far I can see that you have a collection of components (KNIME Components Guide). They will no be able to run by themselves.
And you might want to try and install KNIME in a folder that does not have blanks in the folder name. Just in case …