@akhtarameen I have adapted the example and added a propagation myself and successfully run it on a Windows machine and it seems to work (hope @Kathrin does not mind). The propagation would have to be pre-run in order to work (so best you use my example). You might have to allow it to create a new Python environment. I initially did find the propagation concept a little confusing to be honest.
Then you might want to include more information about your system and what the error message says; possibly after using the example. Please note the fully executed workflow gets too large for the hub or the forum.
And then there might be hope for all the Python version problems since KNIME has announced a cooperation (integration) with Anaconda. They are a little short on information about licenses (Anaconda did some changes there recently) but there seems to be some development.