I am at my wit's end with this one, mods are all up to date, I would rather not remove every compat. Here is the crash log, I will be grabbing latest.log in just one second
This is the error message itself:
The game crashed whilst rendering overlay
Error: java.lang.NullPointerException: Cannot invoke "net.minecraft.world.level.block.Block.m_49966_()" because the return value of "java.util.function.Supplier.get()" is null