Bug UnsupportedOperation: Only a Thread within a bot's ThreadGroup may eavesdrop on the game client

Happens on all of my bots; both locally in dev mode, as well as w/ other users using the bot reporting it. Has only started recently for me. I was away for a few months and prior to that it didn't happen. In dev mode, the error points to my GUI setup, specifically loading the InputStream, even though if I rerun the bot my GUI will load w/o a problem. Some other users (@awesome123man and more) are also having this problem.

Party mentioned it had something to do with the AbstractBot class, but I can't figure out what could be causing it.

Full exception:

Code (Text):

1. java.lang.UnsupportedOperationException: Only a Thread within a bot's ThreadGroup may eavesdrop on the game client.
2.  at nul.iIiIiIiIiIiI.float(blb:158)
3.  at com.runemate.game.api.hybrid.Environment.getBot(yqb:62)
4.  at com.runemate.game.api.hybrid.GameEvents$GameEvent.isEnabled(lw:86)
5.  at nul.iIIIIIiIiiIi.validate(whb:124)
6.  at com.runemate.game.api.script.framework.LoopingBot.run(mxa:193)
7.  at com.runemate.game.api.script.framework.AbstractBot.start(dza:163)
8.  at nul.iiIiIIiiIIII.run(vib:99)
9. RuneMate v2.4.4.4 - DivineFire v1.3.0 - OSRS r129 21CB29 - Windows 10 - Java8u92 x86 (Oracle Corporation)

 

I'll edit this with an update on exactly everything when I test it (can't right now bc Christmas) but off the top of my head the error points to the setup of the gui, specifically to:

Code (Text):

1. loader.load(stream.get());

which points to:

Code (Text):

1.  
2. Future<InputStream> stream = bot.getPlatform().invokeLater(() ->
3.         Resources.getAsStream("UI/Practice.fxml"));

from this in the main class:

Code (Text):

1. public ObjectProperty<? extends Node> botInterfaceProperty() {
2.         if (botInterfaceProperty == null) {
3.             botInterfaceProperty = new SimpleObjectProperty<>(configUI  = new GuiFXSetup(this));
4.         }
5.         return botInterfaceProperty;
6.     }

--- Double Post Merged, Jan 1, 2017, Original Post Date: Dec 25, 2016 ---

@Party Just got the exception again so here's the exact error from console:

Code (Text):

1. java.util.concurrent.ExecutionException: java.lang.UnsupportedOperationException: Only a Thread within a bot's ThreadGroup may eavesdrop on the game client.
2.     at java.util.concurrent.FutureTask.report(FutureTask.java:122)
3.     at java.util.concurrent.FutureTask.get(FutureTask.java:192)
4.     at com.deathizpro.bots.DivineRC.UI.UISetup.<init>(UISetup.java:37)
5.     at com.deathizpro.bots.DivineRC.DivineRC.botInterfaceProperty(DivineRC.java:62)
6.     at java.util.concurrent.FutureTask.run(FutureTask.java:266)
7.     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
8.     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
9.     at java.lang.Thread.run(Thread.java:745)
10. Caused by: java.lang.UnsupportedOperationException: Only a Thread within a bot's ThreadGroup may eavesdrop on the game client.
11.     at nul.IIIiIIiIIIIi.null(pkb:107)
12.     at com.runemate.game.api.hybrid.Environment.getBot(hpb:24)
13.     at com.runemate.game.api.hybrid.util.Resources.getAsStream(nab:51)
14.     at com.deathizpro.bots.DivineRC.UI.UISetup.lambda$new$0(UISetup.java:29)
15.     ... 4 more
16. java.lang.UnsupportedOperationException: Only a Thread within a bot's ThreadGroup may eavesdrop on the game client.
17.     at nul.IIIiIIiIIIIi.null(pkb:107)
18.     at com.runemate.game.api.hybrid.Environment.getBot(hpb:24)
19.     at nul.IIIIIIiIIiIi.run(thb:130)
20.     at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
21.     at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
22.     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
23.     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
24.     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
25.     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
26.     at java.lang.Thread.run(Thread.java:745)

Error points to (specifically the loader.load() line):

Code (Text):

1.         try {
2.             loader.load(stream.get());
3.         } catch (IOException | InterruptedException | ExecutionException e) {
4.             System.err.println("Error loading GUI");
5.             e.printStackTrace();
6.         }

Which is called in my interface setup (UISetup class), which is called from the main bot thread trying to create a new instance in the botInterfaceProperty() method:

Code (Text):

1.     public ObjectProperty<? extends Node> botInterfaceProperty() {
2.         if (botInterfaceProperty == null) {
3.             botInterfaceProperty = new SimpleObjectProperty<>(uiSetup = new UISetup(this));
4.         }
5.         return botInterfaceProperty;
6.     }

Also, here's a look at my InputStream:

Code (Text):

1. Future<InputStream> stream = bot.getPlatform().invokeLater(() ->
2.                 Resources.getAsStream("DivineRC/UI/ReworkedUI.fxml"));

This doesn't happen all of the time. Just some of the time, and when it does happen the UI doesn't load and the bot will crash prompting the user to send errors (so my exception log is being bombarded atm). If it doesn't happen, the UI loads fine.

 

Where does the error point to?

 

What line is the crash pointing to? Paste that.