"Run Client"-Command doesn't work

Hello everyone,

I've got the problem that if I wanted to test my mod (generator 1.17.1 on EAP2021.3.47317) the client didn't load and when I checked the console the following error is what I got:

https://pastebin.com/eR44VppX

I already tried clearing my gradle-cache, deleting my gradle folder, using another workspace to build and I've also checked the knowledge base and forum but It seems there isn't an answer to this question yet. I'd be grateful if I get a helpful answer. Thanks!