Crash on startup with Fabric-Rug (another fabric extension mod). Here is the log (no crash report):
https://gist.github.com/DragonEggBedrockBreaking/df2698ceb045713425205cfc8d7314be

Update: The person who coded Fabric-Rug said that he managed to get it to work, so I will close this when it is pushed to GitHub and a release is published.

It's fixed on my side now ;)