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java.lang.NoSuchMethodError: 'org.jetbrains.kotlin.idea.stubindex.KotlinFullClassNameIndex org.jetbrains.kotlin.idea.stubindex.KotlinFullClassNameIndex.getInstance ()' ...
I am creating a server mod and subscribe to the EntityJoinLevelEvent but is uable to use some methods on the Entity object. I get an java.lang.NoSuchMethodError: 'double net.minecraft.world.entity.