I run a small server that has reliquary on it and every now and then it crashes with the following error message:
java.lang.NullPointerException: Cannot invoke "java.util.Set.contains(Object)" because the return value of "java.util.Map.get(Object)" is null at TRANSFORMER/[email protected]/reliquary.items.MobCharmItem$CharmInventoryHandler.playerHasMobCharm(MobCharmItem.java:254) at TRANSFORMER/[email protected]/reliquary.items.MobCharmItem.isMobCharmPresent(MobCharmItem.java:169) at TRANSFORMER/[email protected]/reliquary.items.MobCharmItem.lambda$onLivingUpdate$1(MobCharmItem.java:122) at java.base/java.util.Optional.ifPresent(Optional.java:178) at TRANSFORMER/[email protected]/reliquary.items.MobCharmItem.onLivingUpdate(MobCharmItem.java:121) at MC-BOOTSTRAP/net.minecraftforge.eventbus/net.minecraftforge.eventbus.EventBus.doCastFilter(EventBus.java:260) at MC-BOOTSTRAP/net.minecraftforge.eventbus/net.minecraftforge.eventbus.EventBus.lambda$addListener$11(EventBus.java:252) at MC-BOOTSTRAP/net.minecraftforge.eventbus/net.minecraftforge.eventbus.EventBus.post(EventBus.java:315) at MC-BOOTSTRAP/net.minecraftforge.eventbus/net.minecraftforge.eventbus.EventBus.post(EventBus.java:296) at TRANSFORMER/[email protected]/net.minecraftforge.common.ForgeHooks.onLivingTick(ForgeHooks.java:264) at TRANSFORMER/[email protected]/net.minecraft.world.entity.LivingEntity.m_8119_(LivingEntity.java:2258) at TRANSFORMER/[email protected]/net.minecraft.world.entity.Mob.m_8119_(Mob.java:337) at TRANSFORMER/[email protected]/net.minecraft.server.level.ServerLevel.m_8647_(ServerLevel.java:693) at TRANSFORMER/[email protected]/net.minecraft.world.level.Level.m_46653_(Level.java:479) at TRANSFORMER/[email protected]/net.minecraft.server.level.ServerLevel.m_184063_(ServerLevel.java:343) at TRANSFORMER/[email protected]/net.minecraft.world.level.entity.EntityTickList.m_156910_(EntityTickList.java:54) at TRANSFORMER/[email protected]/net.minecraft.server.level.ServerLevel.m_8793_(ServerLevel.java:323) at TRANSFORMER/[email protected]/net.minecraft.server.MinecraftServer.m_5703_(MinecraftServer.java:893) at TRANSFORMER/[email protected]/net.minecraft.server.dedicated.DedicatedServer.m_5703_(DedicatedServer.java:283) at TRANSFORMER/[email protected]/net.minecraft.server.MinecraftServer.m_5705_(MinecraftServer.java:814) at TRANSFORMER/[email protected]/net.minecraft.server.MinecraftServer.m_130011_(MinecraftServer.java:661) at TRANSFORMER/[email protected]/net.minecraft.server.MinecraftServer.m_206580_(MinecraftServer.java:251) at java.base/java.lang.Thread.run(Thread.java:840)

If you need any more information from me please let me know.

Fixed in the latest release