Google Analytics UTM tags are ignored

Your software
My Mautic version is:3.1
My PHP version is: 7.2.33

Your problem
My problem is: I did everything like in this tutorial. But Mautic ignores everthing I enter in the 4 fields (source, medium, etc) under " Google Analytics UTM tags". So none of the links in my emails contain any UTM tags.

These errors are showing in the log:

Steps I have tried to fix the problem: