Crash

---- Minecraft Crash Report ----
// Ooh. Shiny.

Time: 2/27/20 12:23 PM
Description: Colliding entity with block

java.lang.IllegalStateException: Removing entity while ticking!
	at net.minecraft.server.v1_14_R1.WorldServer.removeEntity(WorldServer.java:1104)
	at net.minecraft.server.v1_14_R1.WorldServer.removePlayer(WorldServer.java:1123)
	at net.minecraft.server.v1_14_R1.EntityPlayer.a(EntityPlayer.java:801)
	at net.minecraft.server.v1_14_R1.BlockEnderPortal.a(BlockEnderPortal.java:34)
	at net.minecraft.server.v1_14_R1.IBlockData.a(SourceFile:273)
	at net.minecraft.server.v1_14_R1.Entity.checkBlockCollisions(Entity.java:922)
	at net.minecraft.server.v1_14_R1.Entity.move(Entity.java:626)
	at net.minecraft.server.v1_14_R1.EntityLiving.e(EntityLiving.java:2140)
	at net.minecraft.server.v1_14_R1.EntityHuman.e(EntityHuman.java:1462)
	at net.citizensnpcs.nms.v1_14_R1.entity.EntityHumanNPC.e(EntityHumanNPC.java:180)
	at net.citizensnpcs.nms.v1_14_R1.entity.EntityHumanNPC.moveOnCurrentHeading(EntityHumanNPC.java:345)
	at net.citizensnpcs.nms.v1_14_R1.entity.EntityHumanNPC.tick(EntityHumanNPC.java:431)
	at net.minecraft.server.v1_14_R1.WorldServer.entityJoinedWorld(WorldServer.java:568)
	at net.minecraft.server.v1_14_R1.World.a(World.java:745)
	at net.minecraft.server.v1_14_R1.WorldServer.doTick(WorldServer.java:344)
	at net.minecraft.server.v1_14_R1.MinecraftServer.b(MinecraftServer.java:1068)
	at net.minecraft.server.v1_14_R1.DedicatedServer.b(DedicatedServer.java:393)
	at net.minecraft.server.v1_14_R1.MinecraftServer.a(MinecraftServer.java:970)
	at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:815)
	at java.lang.Thread.run(Thread.java:748)