Warn

org.apache.commons.lang.UnhandledException: Plugin ShareControl v2.3.3 generated an exception while executing task 47207
        at org.bukkit.craftbukkit.v1_8_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:56)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.util.ConcurrentModificationException
        at java.util.HashMap$HashIterator.nextNode(HashMap.java:1429)
        at java.util.HashMap$KeyIterator.next(HashMap.java:1453)
        at com.net.h1karo.sharecontrol.database.Database.SQLSave(Database.java:422)
        at com.net.h1karo.sharecontrol.database.Database.saveDatabase(Database.java:100)
        at com.net.h1karo.sharecontrol.database.Database$1.run(Database.java:109)
        at org.bukkit.craftbukkit.v1_8_R1.scheduler.CraftTask.run(CraftTask.java:71)
        at org.bukkit.craftbukkit.v1_8_R1.scheduler.CraftAsyncTask.run(CraftAsyncTask.java:53)
        ... 3 more