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via GitHub by maxanier
, 1 year ago
This exception has no message.
java.lang.NullPointerException: 	at net.minecraftforge.fml.common.registry.PersistentRegistryManager.makeDelegate(	at net.minecraftforge.fml.common.registry.IForgeRegistryEntry$Impl.(	at amerifrance.guideapi.api.impl.Book.(