11:03.07 [Server thread/ERROR] [minecraft/MinecraftServer]: Encountered an unexpected exception
net.minecraft.crash.ReportedException: Ticking entity
   at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:889) ~[forge:?] {re:classloading,pl:accesstransformer:B}
   at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:821) ~[forge:?] {re:classloading,pl:accesstransformer:B}
   at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:84) ~[forge:?] {re:classloading,pl:runtimedistcleaner:A}
   at net.minecraft.server.MinecraftServer.func_240802_v_(MinecraftServer.java:664) ~[forge:?] {re:classloading,pl:accesstransformer:B}
   at net.minecraft.server.MinecraftServer.lambda$startServer$0(MinecraftServer.java:233) ~[forge:?] {re:classloading,pl:accesstransformer:B}
   at java.lang.Thread.run(Thread.java:748) [?:1.8.0_302] {}
Caused by: java.lang.RuntimeException: Slot 54 not in valid range - [0,54)
   at net.minecraftforge.items.ItemStackHandler.validateSlotIndex(ItemStackHandler.java:221) ~[forge:?] {re:classloading}
   at net.minecraftforge.items.ItemStackHandler.getStackInSlot(ItemStackHandler.java:73) ~[forge:?] {re:classloading}
   at net.minecraftforge.items.SlotItemHandler.getStack(SlotItemHandler.java:54) ~[forge:?] {re:classloading}
   at net.minecraft.inventory.container.Container.detectAndSendChanges(Container.java:132) ~[forge:?] {re:classloading}
   at net.minecraft.entity.player.ServerPlayerEntity.tick(ServerPlayerEntity.java:378) ~[forge:?] {re:classloading,pl:accesstransformer:B}
   at net.minecraft.world.server.ServerWorld.updateEntity(ServerWorld.java:623) ~[forge:?] {re:classloading}
   at net.minecraft.world.World.guardEntityTick(World.java:601) ~[forge:?] {re:classloading,pl:accesstransformer:B}
   at net.minecraft.world.server.ServerWorld.tick(ServerWorld.java:407) ~[forge:?] {re:classloading}
   at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:885) ~[forge:?] {re:classloading,pl:accesstransformer:B}