[12:40:05] [Server thread/ERROR]: Could not pass event BlockGrowEvent to FabledSkyBlock v2.2.11
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[server.jar:1.8.8-R0.1-SNAPSHOT]
	at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:74) ~[server.jar:1.8.8-R0.1-SNAPSHOT]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[server.jar:1.8.8-R0.1-SNAPSHOT]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:517) [server.jar:1.8.8-R0.1-SNAPSHOT]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:502) [server.jar:1.8.8-R0.1-SNAPSHOT]
	at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.handleBlockGrowEvent(CraftEventFactory.java:631) [server.jar:1.8.8-R0.1-SNAPSHOT]
	at net.minecraft.server.v1_8_R3.BlockCactus.b(BlockCactus.java:36) [server.jar:1.8.8-R0.1-SNAPSHOT]
	at net.minecraft.server.v1_8_R3.Block.a(Block.java:309) [server.jar:1.8.8-R0.1-SNAPSHOT]
	at net.minecraft.server.v1_8_R3.WorldServer.h(WorldServer.java:500) [server.jar:1.8.8-R0.1-SNAPSHOT]
	at net.minecraft.server.v1_8_R3.WorldServer.doTick(WorldServer.java:256) [server.jar:1.8.8-R0.1-SNAPSHOT]
	at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:923) [server.jar:1.8.8-R0.1-SNAPSHOT]
	at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:382) [server.jar:1.8.8-R0.1-SNAPSHOT]
	at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:806) [server.jar:1.8.8-R0.1-SNAPSHOT]
	at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:708) [server.jar:1.8.8-R0.1-SNAPSHOT]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_242]
Caused by: java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextNode(HashMap.java:1445) ~[?:1.8.0_242]
	at java.util.HashMap$ValueIterator.next(HashMap.java:1474) ~[?:1.8.0_242]
	at java.util.AbstractCollection.toArray(AbstractCollection.java:141) ~[?:1.8.0_242]
	at java.util.ArrayList.<init>(ArrayList.java:178) ~[?:1.8.0_242]
	at com.songoda.skyblock.island.IslandManager.getIslandAtLocation(IslandManager.java:1489) ~[?:?]
	at com.songoda.skyblock.listeners.Grow.onCropUpgrade(Grow.java:83) ~[?:?]
	at sun.reflect.GeneratedMethodAccessor148.invoke(Unknown Source) ~[?:?]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_242]
	at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_242]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:300) ~[server.jar:1.8.8-R0.1-SNAPSHOT]
	... 14 more