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  1. Minecraft: Java Edition
  2. MC-227537

Crash: java.lang.NullPointerException: Cannot invoke "it.unimi.dsi.fastutil.objects.ObjectSet.remove(Object)" because "$$4" is null

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    • Icon: Bug Bug
    • Resolution: Fixed
    • 1.18 Pre-release 8
    • 1.17 Release Candidate 1, 1.17, 1.17.1 Pre-release 1, 1.17.1 Pre-release 3, 1.17.1 Release Candidate 1, 1.17.1, 21w37a, 21w39a, 21w40a, 21w41a, 21w42a, 1.18 Pre-release 4, 1.18 Pre-release 5, 1.18 Pre-release 7
    • None
    • Community Consensus
    • Crash
    • Very Important

      The bug

      I received the error java.lang.NullPointerException: Cannot invoke "it.unimi.dsi.fastutil.objects.ObjectSet.remove(Object)" because "$$4" is null in my game's log today. I am unsure of the cause of the issue, because I wasn't monitoring my game's log at the time.

      As of 1.18 Pre-release 7, this causes a crash.

      Exception in server tick loop
java.lang.NullPointerException: Cannot invoke "it.unimi.dsi.fastutil.objects.ObjectSet.remove(Object)" because "$$4" is null
	at adb.b(SourceFile:230)
	at acv.a(SourceFile:1044)
	at adg.a(SourceFile:457)
	at aea.a(SourceFile:927)
	at vp.a(SourceFile:114)
	at vp$a.a(SourceFile:42)
	at qt.a(SourceFile:21)
	at yx.run(SourceFile:18)
	at auh.c(SourceFile:151)
	at aul.c(SourceFile:23)
	at net.minecraft.server.MinecraftServer.b(SourceFile:780)
	at net.minecraft.server.MinecraftServer.c(SourceFile:162)
	at auh.y(SourceFile:125)
	at net.minecraft.server.MinecraftServer.bf(SourceFile:762)
	at net.minecraft.server.MinecraftServer.y(SourceFile:756)
	at auh.bp(SourceFile:110)
	at net.minecraft.server.MinecraftServer.x(SourceFile:740)
	at net.minecraft.server.MinecraftServer.w(SourceFile:688)
	at net.minecraft.server.MinecraftServer.a(SourceFile:270)
	at java.base/java.lang.Thread.run(Thread.java:833)

        1. crash-2021-11-24_00.08.32-server.txt
          3 kB
        2. crash-2021-11-24_02.18.57-server.txt
          3 kB
        3. deobf_crash-2021-11-24_00.08.32-server.txt
          5 kB
        4. deobf_crash-2021-11-24_02.18.57-server.txt
          5 kB

            boq [Mojang] Bartosz Bok
            markderickson [Mod] markderickson
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            18 Vote for this issue
            Watchers:
            13 Start watching this issue

              Created:
              Updated:
              Resolved:
              CHK: