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  1. Minecraft: Java Edition
  2. MC-158729

java.util.ConcurrentModificationException while updating neighbours

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    • Icon: Bug Bug
    • Resolution: Awaiting Response
    • None
    • 1.14.4
    • None
    • Unconfirmed
    • Crash

      The server crashed randomly after someone logged in, caused by a java.util.ConcurrentModificationException. No other players were online at that moment. The exception seems to be caused by the redstone wire in the attached screenshot.

      Description: Exception while updating neighbours
      
      java.util.ConcurrentModificationException
      	at java.util.HashMap$HashIterator.nextNode(HashMap.java:1445)
      	at java.util.HashMap$KeyIterator.next(HashMap.java:1469)
      	at vk.a(SourceFile:1037)
      	at bhr.a(SourceFile:233)
      	at bov.a(SourceFile:154)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:317)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:322)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:321)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:321)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:317)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:322)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:321)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:321)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:317)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:322)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:321)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:321)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:317)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:322)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:321)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:321)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:317)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:322)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:321)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:321)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:317)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:322)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:321)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:321)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:317)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:322)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:321)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:322)
      	at bqz.a(SourceFile:202)
      	at bqz.a(SourceFile:340)
      	at bvt.a(SourceFile:245)
      	at bhr.a(SourceFile:353)
      	at bhr.b(SourceFile:318)
      	at bhr.a(SourceFile:309)
      	at bhr.a(SourceFile:237)
      	at boa.d(SourceFile:71)
      	at bue.T_(SourceFile:19)
      	at bhr.K(SourceFile:624)
      	at vk.a(SourceFile:405)
      	at net.minecraft.server.MinecraftServer.b(SourceFile:835)
      	at uk.b(SourceFile:343)
      	at net.minecraft.server.MinecraftServer.a(SourceFile:774)
      	at net.minecraft.server.MinecraftServer.run(SourceFile:642)
      	at java.lang.Thread.run(Thread.java:748)
      

            Unassigned Unassigned
            jeuvke Jeuv
            Votes:
            3 Vote for this issue
            Watchers:
            2 Start watching this issue

              Created:
              Updated:
              Resolved: