Bug UnsupportedOperationException Runtime Error

I keep getting this error in my exception log, and occasionally it happens locally:

Code (Text):

1. java.lang.UnsupportedOperationException: Only a Thread within a bot's ThreadGroup may eavesdrop on the game client. Current Thread=Thread[pool-4-thread-1,5,[t-g]13168 - Infinite Ranging Guild]
2.  at nul.IiiIiIiiiIII.this(bqb:38)
3.  at com.runemate.game.api.hybrid.Environment.getGameType(wkb:195)
4.  at com.runemate.game.api.hybrid.Environment.isRS3(wkb)
5.  at nul.IIIiiIiIIIII.this(kib:94)
6.  at nul.IIIiiIiIIIII.validate(kib:60)
7.  at com.runemate.game.api.script.framework.LoopingBot.run(kdb:203)
8.  at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
9.  at java.util.concurrent.FutureTask.run(Unknown Source)
10.  at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
11.  at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
12.  at java.lang.Thread.run(Unknown Source)
13. RuneMate v2.5.0.0 - Infinite Ranging Guild v1.0 - OSRS r138 08E6D7 - Windows 10 - Java8u121 x86 (Oracle Corporation)

What does this mean? How do I fix it?