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org.bukkit.event.EventException at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at com.gmail.gaelitoelquesito.CustomNoteBlock.CNBAPI.SongPlaying$1.run(SongPlaying.java:93)[CustomNoteBlocks.jar:?] at java.lang.Thread.run(Thread.java:745)[?:1.8.0_74]Caused by: java.lang.IllegalStateException: Asynchronous entity track! at org.spigotmc.AsyncCatcher.catchOp(AsyncCatcher.java:14)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at net.minecraft.server.v1_9_R1.EntityTracker.addEntity(EntityTracker.java:105)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at net.minecraft.server.v1_9_R1.EntityTracker.track(EntityTracker.java:81)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at net.minecraft.server.v1_9_R1.WorldManager.a(WorldManager.java:18)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at net.minecraft.server.v1_9_R1.World.b(World.java:989)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at net.minecraft.server.v1_9_R1.WorldServer.b(WorldServer.java:1113)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at net.minecraft.server.v1_9_R1.WorldServer.a(WorldServer.java:1078)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at net.minecraft.server.v1_9_R1.Chunk.addEntities(Chunk.java:753)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at org.bukkit.craftbukkit.v1_9_R1.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:45)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at org.bukkit.craftbukkit.v1_9_R1.chunkio.ChunkIOProvider.callStage2(ChunkIOProvider.java:1)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at org.bukkit.craftbukkit.v1_9_R1.util.AsynchronousExecutor.skipQueue(AsynchronousExecutor.java:337)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at org.bukkit.craftbukkit.v1_9_R1.util.AsynchronousExecutor.getSkipQueue(AsynchronousExecutor.java:295)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at org.bukkit.craftbukkit.v1_9_R1.chunkio.ChunkIOExecutor.syncChunkLoad(ChunkIOExecutor.java:16)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at net.minecraft.server.v1_9_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:131)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at net.minecraft.server.v1_9_R1.ChunkProviderServer.getChunkAt(ChunkProviderServer.java:113)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at org.bukkit.craftbukkit.v1_9_R1.CraftWorld.getChunkAt(CraftWorld.java:125)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at org.bukkit.craftbukkit.v1_9_R1.CraftWorld.getBlockAt(CraftWorld.java:89)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at org.bukkit.craftbukkit.v1_9_R1.CraftWorld.getBlockAt(CraftWorld.java:560)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at org.bukkit.Location.getBlock(Location.java:87)[spigot.jar:git-Spigot-1a196e1-a5d4a93] at com.gmail.gaelitoelquesito.CustomNoteBlock.Detector.blockStop(Detector.java:39)[?:?] at sun.reflect.GeneratedMethodAccessor130.invoke(Unknown Source)[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[?:1.8.0_74] at java.lang.reflect.Method.invoke(Method.java:498)[?:1.8.0_74] at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306)[spigot.jar:git-Spigot-1a196e1-a5d4a93] ... 5 more