math.js: Uncaught TypeError: Hc is not a function

[29th-Day]

I cloned the github and opend the page in the brower. The page loaded but I get the error that "RevealMath.KaTeX" (or any other plugin) is not defined. The scripts are imported and loaded, however, there was this error in 1:4638:

Uncaught TypeError: Hc is not a function
http://localhost:8000/plugin/math/math.js:1
http://localhost:8000/plugin/math/math.js:1
http://localhost:8000/plugin/math/math.js:1

The script calls a thing called Hc multiple times but apperently it isn't a function? (For other plugins the name is different but the error stays the same). I guess that leads to the ReferenceError.

How do I fix this issue?

[29th-Day]

I "solved" the issue with using files provied by the "basic setup". These files don't contain the errors.