[16:19:16] [Server thread/DEBUG] [FML]: Gathering id map for writing to world save New World
[16:19:53] [Server thread/ERROR] [minecraft/EntityTracker]: "Silently" catching entity tracking error.
net.minecraft.util.ReportedException: Adding entity to track
	at net.minecraft.entity.EntityTracker.track(EntityTracker.java:256) [EntityTracker.class:?]
	at net.minecraftforge.fml.common.registry.EntityRegistry.tryTrackingEntity(EntityRegistry.java:369) [EntityRegistry.class:?]
	at net.minecraft.entity.EntityTracker.track(EntityTracker.java:80) [EntityTracker.class:?]
	at net.minecraft.world.ServerWorldEventHandler.onEntityAdded(ServerWorldEventHandler.java:37) [ServerWorldEventHandler.class:?]
	at net.minecraft.world.World.onEntityAdded(World.java:1222) [World.class:?]
	at net.minecraft.world.WorldServer.onEntityAdded(WorldServer.java:1112) [WorldServer.class:?]
	at net.minecraft.world.World.spawnEntity(World.java:1213) [World.class:?]
	at net.minecraft.world.WorldServer.spawnEntity(WorldServer.java:1058) [WorldServer.class:?]
	at net.minecraft.world.chunk.storage.AnvilChunkLoader.readWorldEntityPos(AnvilChunkLoader.java:571) [AnvilChunkLoader.class:?]
	at net.minecraft.command.server.CommandSummon.execute(CommandSummon.java:97) [CommandSummon.class:?]
	at net.minecraft.command.CommandHandler.tryExecute(CommandHandler.java:119) [CommandHandler.class:?]
	at net.minecraft.command.CommandHandler.executeCommand(CommandHandler.java:91) [CommandHandler.class:?]
	at net.minecraft.network.NetHandlerPlayServer.handleSlashCommand(NetHandlerPlayServer.java:962) [NetHandlerPlayServer.class:?]
	at net.minecraft.network.NetHandlerPlayServer.processChatMessage(NetHandlerPlayServer.java:941) [NetHandlerPlayServer.class:?]
	at net.minecraft.network.play.client.CPacketChatMessage.processPacket(CPacketChatMessage.java:38) [CPacketChatMessage.class:?]
	at net.minecraft.network.play.client.CPacketChatMessage.processPacket(CPacketChatMessage.java:8) [CPacketChatMessage.class:?]
	at net.minecraft.network.PacketThreadUtil$1.run(PacketThreadUtil.java:15) [PacketThreadUtil$1.class:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_251]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_251]
	at net.minecraft.util.Util.runTask(Util.java:50) [Util.class:?]
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:723) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:668) [MinecraftServer.class:?]
	at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:185) [IntegratedServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526) [MinecraftServer.class:?]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_251]
Caused by: java.lang.NullPointerException
	at net.minecraft.entity.EntityTrackerEntry.updatePlayerEntity(EntityTrackerEntry.java:421) ~[EntityTrackerEntry.class:?]
	at net.minecraft.entity.EntityTrackerEntry.updatePlayerEntities(EntityTrackerEntry.java:490) ~[EntityTrackerEntry.class:?]
	at net.minecraft.entity.EntityTracker.track(EntityTracker.java:230) ~[EntityTracker.class:?]
	... 24 more
[16:19:53] [Server thread/INFO] [minecraft/MinecraftServer]: [Player964: Object successfully summoned]
[16:19:53] [Server thread/ERROR] [minecraft/MinecraftServer]: Encountered an unexpected exception
net.minecraft.util.ReportedException: Ticking entity
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:773) ~[MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:668) ~[MinecraftServer.class:?]
	at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:185) ~[IntegratedServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526) [MinecraftServer.class:?]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_251]
Caused by: java.lang.NullPointerException
	at net.minecraft.enchantment.Enchantment.getEntityEquipment(Enchantment.java:58) ~[Enchantment.class:?]
	at net.minecraft.enchantment.EnchantmentHelper.getMaxEnchantmentLevel(EnchantmentHelper.java:201) ~[EnchantmentHelper.class:?]
	at net.minecraft.entity.EntityLivingBase.frostWalk(EntityLivingBase.java:364) ~[EntityLivingBase.class:?]
	at net.minecraft.entity.EntityLivingBase.onEntityUpdate(EntityLivingBase.java:300) ~[EntityLivingBase.class:?]
	at dev.large.modelmod.entity.EntityPenguin.onEntityUpdate(EntityPenguin.java:61) ~[EntityPenguin.class:?]
	at net.minecraft.entity.Entity.onUpdate(Entity.java:389) ~[Entity.class:?]
	at net.minecraft.entity.EntityLivingBase.onUpdate(EntityLivingBase.java:2096) ~[EntityLivingBase.class:?]
	at dev.large.modelmod.entity.EntityPenguin.onUpdate(EntityPenguin.java:28) ~[EntityPenguin.class:?]
	at net.minecraft.world.World.updateEntityWithOptionalForce(World.java:1996) ~[World.class:?]
	at net.minecraft.world.WorldServer.updateEntityWithOptionalForce(WorldServer.java:832) ~[WorldServer.class:?]
	at net.minecraft.world.World.updateEntity(World.java:1958) ~[World.class:?]
	at net.minecraft.world.World.updateEntities(World.java:1762) ~[World.class:?]
	at net.minecraft.world.WorldServer.updateEntities(WorldServer.java:613) ~[WorldServer.class:?]
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:767) ~[MinecraftServer.class:?]
	... 4 more
[16:19:53] [Server thread/ERROR] [minecraft/MinecraftServer]: This crash report has been saved to: D:\A OSCAR\Minecraft Coding\IntelliJ Workspace Modding 1.12.2\ModelMod\run\.\crash-reports\crash-2021-02-23_16.19.53-server.txt
[16:19:53] [Server thread/INFO] [minecraft/MinecraftServer]: Stopping server
[16:19:53] [Server thread/INFO] [minecraft/MinecraftServer]: Saving players
[16:19:53] [Server thread/INFO] [minecraft/MinecraftServer]: Saving worlds
[16:19:53] [Server thread/INFO] [minecraft/MinecraftServer]: Saving chunks for level 'New World'/overworld
[16:19:53] [Server thread/DEBUG] [FML]: Gathering id map for writing to world save New World
[16:19:53] [Server thread/ERROR] [FML]: An Entity type dev.large.modelmod.entity.EntityPenguin has thrown an exception trying to write state. It will not persist. Report this to the mod author
net.minecraft.util.ReportedException: Saving entity NBT
	at net.minecraft.entity.Entity.writeToNBT(Entity.java:1772) ~[Entity.class:?]
	at net.minecraft.entity.Entity.writeToNBTOptional(Entity.java:1654) ~[Entity.class:?]
	at net.minecraft.world.chunk.storage.AnvilChunkLoader.writeChunkToNBT(AnvilChunkLoader.java:362) [AnvilChunkLoader.class:?]
	at net.minecraft.world.chunk.storage.AnvilChunkLoader.saveChunk(AnvilChunkLoader.java:174) [AnvilChunkLoader.class:?]
	at net.minecraft.world.gen.ChunkProviderServer.saveChunkData(ChunkProviderServer.java:202) [ChunkProviderServer.class:?]
	at net.minecraft.world.gen.ChunkProviderServer.saveChunks(ChunkProviderServer.java:230) [ChunkProviderServer.class:?]
	at net.minecraft.world.WorldServer.saveAllChunks(WorldServer.java:1007) [WorldServer.class:?]
	at net.minecraft.server.MinecraftServer.saveAllWorlds(MinecraftServer.java:408) [MinecraftServer.class:?]
	at net.minecraft.server.integrated.IntegratedServer.saveAllWorlds(IntegratedServer.java:252) [IntegratedServer.class:?]
	at net.minecraft.server.MinecraftServer.stopServer(MinecraftServer.java:446) [MinecraftServer.class:?]
	at net.minecraft.server.integrated.IntegratedServer.stopServer(IntegratedServer.java:372) [IntegratedServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:579) [MinecraftServer.class:?]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_251]
Caused by: java.lang.NullPointerException
	at net.minecraft.entity.EntityLivingBase.writeEntityToNBT(EntityLivingBase.java:511) ~[EntityLivingBase.class:?]
	at net.minecraft.entity.Entity.writeToNBT(Entity.java:1743) ~[Entity.class:?]
	... 12 more
[16:19:53] [Server thread/INFO] [FML]: Unloading dimension 0
[16:19:53] [Server thread/DEBUG] [FML]: Reverting to frozen data state.
[16:19:53] [Server thread/DEBUG] [FML]: Bar Step: ModIdMapping - Minecraft took 0.000s
[16:19:53] [Server thread/DEBUG] [FML]: Bar Step: ModIdMapping - Minecraft Coder Pack took 0.000s
[16:19:53] [Server thread/DEBUG] [FML]: Bar Step: ModIdMapping - Forge Mod Loader took 0.000s
[16:19:54] [Server thread/DEBUG] [FML]: Bar Step: ModIdMapping - Minecraft Forge took 0.074s
[16:19:54] [Server thread/DEBUG] [FML]: Bar Step: ModIdMapping - Model Mod took 0.000s
[16:19:54] [Server thread/DEBUG] [FML]: Bar Step: ModIdMapping - GeckoLib took 0.001s
[16:19:54] [Server thread/DEBUG] [FML]: Bar Finished: ModIdMapping took 0.075s
[16:19:54] [Server thread/INFO] [FML]: Applying holder lookups
[16:19:54] [Server thread/INFO] [FML]: Holder lookups applied
[16:19:54] [Server thread/DEBUG] [FML]: Frozen state restored.
[16:19:54] [Server thread/DEBUG] [FML]: Bar Step: ServerStopped - Minecraft took 0.000s
[16:19:54] [Server thread/DEBUG] [FML]: Bar Step: ServerStopped - Minecraft Coder Pack took 0.001s
[16:19:54] [Server thread/DEBUG] [FML]: Bar Step: ServerStopped - Forge Mod Loader took 0.000s
[16:19:54] [Server thread/DEBUG] [FML]: Bar Step: ServerStopped - Minecraft Forge took 0.000s
[16:19:54] [Server thread/DEBUG] [FML]: Bar Step: ServerStopped - Model Mod took 0.000s
[16:19:54] [Server thread/DEBUG] [FML]: Bar Step: ServerStopped - GeckoLib took 0.000s
[16:19:54] [Server thread/DEBUG] [FML]: Bar Finished: ServerStopped took 0.002s
[16:19:54] [Server thread/INFO] [FML]: The state engine was in incorrect state SERVER_STOPPING and forced into state SERVER_STOPPED. Errors may have been discarded.

Process finished with exit code -1