Bukkit

What steps will reproduce the problem?
1. Define the regen area
2. Break blocks
3. It prints an error in the console

What is the expected output? What do you see instead?
Blocks are supposed to regenerate, but I see error in console.

What version of the product are you using?
5.7

Do you have an error log of what happened?

17.12 18:49:06 [Server] INFO ... 6 more
17.12 18:49:06 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[Spigot188.jar:git-Spigot-5f38d38-18fbb24]
17.12 18:49:06 [Server] INFO at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_80]
17.12 18:49:06 [Server] INFO at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_80]
17.12 18:49:06 [Server] INFO at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_80]
17.12 18:49:06 [Server] INFO at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_80]
17.12 18:49:06 [Server] INFO at net.dmg2.RegenBlock.Listener.RegenBlockEventListenerBlock.onEvent(RegenBlockEventListenerBlock.java:114) ~[?:?]
17.12 18:49:06 [Server] INFO at org.bukkit.craftbukkit.v1_8_R3.block.CraftBlock.setTypeIdAndData(CraftBlock.java:139) ~[Spigot188.jar:git-Spigot-5f38d38-18fbb24]
17.12 18:49:06 [Server] INFO at net.minecraft.server.v1_8_R3.World.setTypeAndData(World.java:396) ~[Spigot188.jar:git-Spigot-5f38d38-18fbb24]
17.12 18:49:06 [Server] INFO at net.minecraft.server.v1_8_R3.Chunk.a(Chunk.java:536) ~[Spigot188.jar:git-Spigot-5f38d38-18fbb24]
17.12 18:49:06 [Server] INFO at net.minecraft.server.v1_8_R3.Block.remove(Block.java:317) ~[Spigot188.jar:git-Spigot-5f38d38-18fbb24]
17.12 18:49:06 [Server] INFO at org.spigotmc.AsyncCatcher.catchOp(AsyncCatcher.java:14) ~[Spigot188.jar:git-Spigot-5f38d38-18fbb24]
17.12 18:49:06 [Server] INFO Caused by: java.lang.IllegalStateException: Asynchronous block remove!
17.12 18:49:06 [Server] INFO at java.lang.Thread.run(Unknown Source) [?:1.7.0_80]
17.12 18:49:06 [Server] INFO at net.dmg2.RegenBlock.RegenBlockQueue.run(RegenBlockQueue.java:38) [RegenBlock.jar:?]
17.12 18:49:06 [Server] INFO at net.dmg2.RegenBlock.RegenBlockQueue.checkQueue(RegenBlockQueue.java:178) [RegenBlock.jar:?]
17.12 18:49:06 [Server] INFO at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [Spigot188.jar:git-Spigot-5f38d38-18fbb24]
17.12 18:49:06 [Server] INFO at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [Spigot188.jar:git-Spigot-5f38d38-18fbb24]
17.12 18:49:06 [Server] INFO at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[Spigot188.jar:git-Spigot-5f38d38-18fbb24]
17.12 18:49:06 [Server] INFO at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[Spigot188.jar:git-Spigot-5f38d38-18fbb24]
17.12 18:49:06 [Server] INFO org.bukkit.event.EventException
17.12 18:49:06 [Server] ERROR Could not pass event RegenBlockEventRespawn to RegenBlock vBeta 5.7

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