Minecraft 1.20.1/Quilt 0.19.1
Mod Menu 7.1.0 & WTHIT 8.1.1
So as you can see there is an update notification for Quilt version of WTHIT in mod menu (even though I was using the latest version of the mod) and the link for the update refers to Fabric version of WTHIT. I had this issue before (on 1.19.2), but then I could just download a Fabric mod update from the link and install it on Quilt. Now Minecraft doesn't run with Fabric WTHIT on Quilt.
So I opened issue about this problem in WTHIT' GitHub repository and deirn said this:
Sorry for any mistakes and the sentence structure - my English pretty bad cause it's not my native language
Minecraft 1.20.1/Quilt 0.19.1 Mod Menu 7.1.0 & WTHIT 8.1.1 So as you can see there is an update notification for Quilt version of WTHIT in mod menu (even though I was using the latest version of the mod) and the link for the update refers to Fabric version of WTHIT. I had this issue before (on 1.19.2), but then I could just download a Fabric mod update from the link and install it on Quilt. Now Minecraft doesn't run with Fabric WTHIT on Quilt.
So I opened issue about this problem in WTHIT' GitHub repository and deirn said this:
Sorry for any mistakes and the sentence structure - my English pretty bad cause it's not my native language