I got stuck trying to set up the Xlwings Excel add-in

I got stuck trying to set up the Xlwings Excel add-in ribbon. Once I've tried almost any kind of combination, I don't know how to set them up!

I'm using Anaconda and the referred directory is: C:\Users\mmrei\Anaconda3

I've tried many combinations as follow:

1) First Attempt:

Interpreter: python

conda Base: C:\Users\mmrei\Anaconda3

2) Second Attempt:

Interpreter: blank

conda Base: C:\Users\mmrei\Anaconda3

2) Third Attempt:

Interpreter: pythonw

conda Base: C:\Users\mmrei\Anaconda3

None of them have worked, all those showed up that warning box:

I really would appreciate any kind of help!

Thank you!