crash-vanilla

[net.minecraft.entity.EntityTracker]: "Silently" catching entity tracking error.
net.minecraft.util.ReportedException: Adding entity to track
	at net.minecraft.entity.EntityTracker.track(EntityTracker.java:262) [EntityTracker.class:?]
	at net.minecraft.entity.EntityTracker.track(EntityTracker.java:104) [EntityTracker.class:?]
	at net.minecraft.world.ServerWorldEventHandler.onEntityAdded(ServerWorldEventHandler.java:43) [ServerWorldEventHandler.class:?]
	at net.minecraft.world.World.onEntityAdded(World.java:1338) [World.class:?]
	at net.minecraft.world.WorldServer.onEntityAdded(WorldServer.java:1175) [WorldServer.class:?]
	at net.minecraft.world.World.spawnEntity(World.java:1329) [World.class:?]
	at net.minecraft.world.WorldServer.spawnEntity(WorldServer.java:1121) [WorldServer.class:?]
	at com.robertx22.customitems.gearitems.weapons.ItemBow.onPlayerStoppedUsing(ItemBow.java:125) [ItemBow.class:?]
	at net.minecraft.item.ItemStack.onPlayerStoppedUsing(ItemStack.java:628) [ItemStack.class:?]
	at net.minecraft.entity.EntityLivingBase.stopActiveHand(EntityLivingBase.java:3095) [EntityLivingBase.class:?]
	at net.minecraft.network.NetHandlerPlayServer.processPlayerDigging(NetHandlerPlayServer.java:694) [NetHandlerPlayServer.class:?]
	at net.minecraft.network.play.client.CPacketPlayerDigging.processPacket(CPacketPlayerDigging.java:56) [CPacketPlayerDigging.class:?]
	at net.minecraft.network.play.client.CPacketPlayerDigging.processPacket(CPacketPlayerDigging.java:12) [CPacketPlayerDigging.class:?]
	at net.minecraft.network.PacketThreadUtil$1.run(PacketThreadUtil.java:21) [PacketThreadUtil$1.class:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_181]
	at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_181]
	at net.minecraft.util.Util.runTask(Util.java:53) [Util.class:?]
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:798) [MinecraftServer.class:?]
	at net.minecraft.server.dedicated.DedicatedServer.updateTimeLightAndEntities(DedicatedServer.java:415) [DedicatedServer.class:?]
	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:743) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:592) [MinecraftServer.class:?]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_181]
Caused by: java.lang.IllegalArgumentException: Don't know how to add class com.robertx22.customitems.gearitems.MyEntityArrow!
	at net.minecraft.entity.EntityTrackerEntry.createSpawnPacket(EntityTrackerEntry.java:683) ~[EntityTrackerEntry.class:?]
	at net.minecraft.entity.EntityTrackerEntry.updatePlayerEntity(EntityTrackerEntry.java:401) ~[EntityTrackerEntry.class:?]
	at net.minecraft.entity.EntityTrackerEntry.updatePlayerEntities(EntityTrackerEntry.java:511) ~[EntityTrackerEntry.class:?]
	at net.minecraft.entity.EntityTracker.track(EntityTracker.java:236) ~[EntityTracker.class:?]
	... 21 more