19.06 15:47:05 [Server] ERROR Attempted Double World add on EntitySkeleton['Skeleton'/166863, uuid='92e21fb6-10fa-419b-af99-14a988e01cf7', l='world', x=-5579.82, y=44.00, z=-868.09, cx=-349, cz=-55, tl=0, v=true, d=false]
19.06 15:47:05 [Server] INFO java.lang.Throwable: null
19.06 15:47:05 [Server] INFO at net.minecraft.server.v1_14_R1.WorldServer.addEntity0(WorldServer.java:940) ~[patched_1.14.2.jar:git-Paper-95]
19.06 15:47:05 [Server] INFO at net.minecraft.server.v1_14_R1.WorldServer.addEntity(WorldServer.java:875) ~[patched_1.14.2.jar:git-Paper-95]
19.06 15:47:05 [Server] INFO at net.minecraft.server.v1_14_R1.MobSpawnerAbstract.a(MobSpawnerAbstract.java:197) ~[patched_1.14.2.jar:git-Paper-95]
19.06 15:47:05 [Server] INFO at net.minecraft.server.v1_14_R1.MobSpawnerAbstract.a(MobSpawnerAbstract.java:203) ~[patched_1.14.2.jar:git-Paper-95]
19.06 15:47:05 [Server] INFO at net.minecraft.server.v1_14_R1.MobSpawnerAbstract.c(MobSpawnerAbstract.java:178) ~[patched_1.14.2.jar:git-Paper-95]
19.06 15:47:05 [Server] INFO at net.minecraft.server.v1_14_R1.TileEntityMobSpawner.tick(SourceFile:62) ~[patched_1.14.2.jar:git-Paper-95]
19.06 15:47:05 [Server] INFO at net.minecraft.server.v1_14_R1.World.tickBlockEntities(World.java:808) ~[patched_1.14.2.jar:git-Paper-95]
19.06 15:47:05 [Server] INFO at net.minecraft.server.v1_14_R1.WorldServer.doTick(WorldServer.java:377) ~[patched_1.14.2.jar:git-Paper-95]
19.06 15:47:05 [Server] INFO at net.minecraft.server.v1_14_R1.MinecraftServer.b(MinecraftServer.java:1192) ~[patched_1.14.2.jar:git-Paper-95]
19.06 15:47:05 [Server] INFO at net.minecraft.server.v1_14_R1.DedicatedServer.b(DedicatedServer.java:418) ~[patched_1.14.2.jar:git-Paper-95]
19.06 15:47:05 [Server] INFO at net.minecraft.server.v1_14_R1.MinecraftServer.a(MinecraftServer.java:1061) ~[patched_1.14.2.jar:git-Paper-95]
19.06 15:47:05 [Server] INFO at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:905) ~[patched_1.14.2.jar:git-Paper-95]
19.06 15:47:05 [Server] INFO at java.lang.Thread.run(Thread.java:748) [?:1.8.0_181]