https://pastebin.com/m8rqNsS1 Crash Log
Minecraft 1.21.4 Fabric
Mods: Fabric API, Weeping Angels

I think it's either because I'm using 1.21.4 and not just 1.21 or the Mixin files. I have no experience in coding so I'm not sure exactly what the problem is. For all I know, I might be missing something obvious.

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But additionally, I have not released a 1.21.4 version of the mod and I shall do so when I find the time soon