Some sort of error on World Move

[ChavitaHD]

[05:21:09 INFO]: 84O issued server command: /is reset [05:21:13 INFO]: 84O issued server command: /is confirm [05:21:15 WARN]: Entity threw exception at islands:-1609.5,136.0,1614.5 [05:21:15 WARN]: java.lang.NullPointerException: GeneratedEntityChickenPet['§b§nchev.s Pet ;)'/56816, l='islands', x=-1609.50, y=136.00, z=1614.50] has null hook! [05:21:15 WARN]: at net.techcable.sonarpet.nms.entities.type.GeneratedEntityChickenPet.checkSanity(Unknown Source) [05:21:15 WARN]: at net.techcable.sonarpet.nms.entities.type.GeneratedEntityChickenPet.A_(Unknown Source) [05:21:15 WARN]: at net.minecraft.server.v1_11_R1.World.entityJoinedWorld(World.java:1742) [05:21:15 WARN]: at net.minecraft.server.v1_11_R1.World.h(World.java:1717) [05:21:15 WARN]: at net.minecraft.server.v1_11_R1.World.tickEntities(World.java:1534) [05:21:15 WARN]: at net.minecraft.server.v1_11_R1.WorldServer.tickEntities(WorldServer.java:621) [05:21:15 WARN]: at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:898) [05:21:15 WARN]: at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:403) [05:21:15 WARN]: at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:754) [05:21:15 WARN]: at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:652) [05:21:15 WARN]: at java.lang.Thread.run(Thread.java:748)

As you can see, this error is thrown when a user abruptly changes locations. In this instance, a user resets their island on Skyblock, when I was teleported to my own island, this error was thrown.