18:47:41 [SEVERE] Task BungeeTask(sched=net.md_5.bungee.scheduler.BungeeScheduler@1a9c38eb, id=1, owner=de.simonsator.partyandfriends.extensions.ts3.TSExtension@3f093abe, task=de.simonsator.partyandfriends.extensions.ts3.api.user.TS3UserManager$1@4d63b624, delay=60000, period=60000, running=true) encountered an exception
java.util.ConcurrentModificationException
	at java.util.HashMap$HashIterator.nextNode(HashMap.java:1437)
	at java.util.HashMap$ValueIterator.next(HashMap.java:1466)
	at de.simonsator.partyandfriends.extensions.ts3.api.user.TS3UserManager$1.run(TS3UserManager.java:118)
	at net.md_5.bungee.scheduler.BungeeTask.run(BungeeTask.java:63)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)