Resolved ConcurrentModificationException

Code (Text):

1.  
2. Exception in thread "AWT-EventQueue-1" (06:42:44) java.util.ConcurrentModificationException
3. (06:42:44)     at java.util.ArrayDeque$DeqIterator.next(Unknown Source)
4. (06:42:44)     at a.sP.render(xtb:86)
5. (06:42:44)     at a.wJ.paintComponent(qhb:211)
6. (06:42:44)     at javax.swing.JComponent.paint(Unknown Source)
7. (06:42:44)     at javax.swing.JComponent.paintChildren(Unknown Source)
8. (06:42:44)     at javax.swing.JComponent.paint(Unknown Source)
9. (06:42:44)     at javax.swing.JLayeredPane.paint(Unknown Source)
10. (06:42:44)     at javax.swing.JComponent.paintChildren(Unknown Source)
11. (06:42:44)     at javax.swing.JComponent.paintToOffscreen(Unknown Source)
12. (06:42:44)     at javax.swing.RepaintManager.paint(Unknown Source)
13. (06:42:44)     at javax.swing.JComponent.paint(Unknown Source)
14. (06:42:44)     at java.awt.GraphicsCallback$PaintCallback.run(Unknown Source)
15. (06:42:44)     at sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source)
16. (06:42:44)     at sun.awt.SunGraphicsCallback.runComponents(Unknown Source)
17. (06:42:44)     at java.awt.Container.paint(Unknown Source)
18. (06:42:44)     at java.awt.Window.paint(Unknown Source)
19. (06:42:44)     at javax.swing.RepaintManager$3.run(Unknown Source)
20. (06:42:44)     at javax.swing.RepaintManager$3.run(Unknown Source)
21. (06:42:44)     at java.security.AccessController.doPrivileged(Native Method)
22. (06:42:44)     at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
23. (06:42:44)     at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
24. (06:42:44)     at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
25. (06:42:44)     at javax.swing.RepaintManager.prePaintDirtyRegions(Unknown Source)
26. (06:42:44)     at javax.swing.RepaintManager.access$1100(Unknown Source)
27. (06:42:44)     at javax.swing.RepaintManager$ProcessingRunnable.run(Unknown Source)
28. (06:42:44)     at java.awt.event.InvocationEvent.dispatch(Unknown Source)
29. (06:42:44)     at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
30. (06:42:44)     at java.awt.EventQueue.access$400(Unknown Source)
31. (06:42:44)     at java.awt.EventQueue$3.run(Unknown Source)
32. (06:42:44)     at java.awt.EventQueue$3.run(Unknown Source)
33. (06:42:44)     at java.security.AccessController.doPrivileged(Native Method)
34. (06:42:44)     at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
35. (06:42:44)     at java.awt.EventQueue.dispatchEvent(Unknown Source)
36. (06:42:44)     at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
37. (06:42:44)     at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
38. (06:42:44)     at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
39. (06:42:44)     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
40. (06:42:44)     at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
41. (06:42:44)     at java.awt.EventDispatchThread.run(Unknown Source)
42.  

It is a rare error, but I don't think it is my fault