Ticking Entity Crash 1.14.2

Description: Ticking entity
java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextNode(HashMap.java:1442) at java.util.HashMap$KeyIterator.next(HashMap.java:1466) at java.lang.Iterable.forEach(Iterable.java:74) at net.minecraft.server.v1_14_R1.ChunkMapDistance.a(SourceFile:132) at net.minecraft.server.v1_14_R1.ChunkProviderServer.tickDistanceManager(ChunkProviderServer.java:204) at net.minecraft.server.v1_14_R1.ChunkProviderServer.getChunkFutureMainThread(ChunkProviderServer.java:144) at net.minecraft.server.v1_14_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:91) at net.minecraft.server.v1_14_R1.World.getChunkAt(World.java:212) at net.minecraft.server.v1_14_R1.IWorldReader.getChunkAt(SourceFile:105) at net.minecraft.server.v1_14_R1.World.getChunkAt(World.java:207) at net.minecraft.server.v1_14_R1.World.getType(World.java:548) at net.minecraft.server.v1_14_R1.PlayerInteractManager.a(PlayerInteractManager.java:88) at net.minecraft.server.v1_14_R1.EntityPlayer.tick(EntityPlayer.java:346) at net.minecraft.server.v1_14_R1.WorldServer.entityJoinedWorld(WorldServer.java:570) at net.minecraft.server.v1_14_R1.World.a(World.java:745) at net.minecraft.server.v1_14_R1.WorldServer.doTick(WorldServer.java:346) at net.minecraft.server.v1_14_R1.MinecraftServer.b(MinecraftServer.java:1057) at net.minecraft.server.v1_14_R1.DedicatedServer.b(DedicatedServer.java:396) at net.minecraft.server.v1_14_R1.MinecraftServer.a(MinecraftServer.java:956) at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:801) at java.lang.Thread.run(Thread.java:748)