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  1. Minecraft: Java Edition
  2. MC-185004

[Crash] java.lang.NullPointerException - Crash on entering end/nether portal when dimension is removed in worldgen settings

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    • Confirmed
    • Crash, Custom Worlds
    • Very Important

       The bug

      Entering portal to the nether or end when that dimension is not present in the json causes the game to crash.

      The crash report reports a null pointer exception ticking the player when attempting to travel to the nether and a null pointer exception colliding the player with a block when entering an end portal.

      I would expect the game to either refuse to generate a portal or simply not transfer the player to the dimension in this situation.

      How to reproduce

      1. Download the worldgen settings worldgen_settings_export.json
      2. Create a new world and select the downloaded file when importing world settings
      3. Make a nether portal and enter it
        The game crashes

      Stack traces

      20w21a: entering_end_crash_report.txt
      Description: Colliding entity with block

java.lang.NullPointerException: Colliding entity with block
	at yx.a(SourceFile:640)
	at bwk.a(SourceFile:44)
	at cei$a.a(SourceFile:864)
	at any.at(SourceFile:955)
	at any.a(SourceFile:644)
	at aoj.a(SourceFile:2068)
	at aoj.e(SourceFile:2025)
	at bdi.e(SourceFile:1573)
	at aoj.l(SourceFile:2398)
	at bdi.l(SourceFile:579)
	at aoj.h(SourceFile:2208)
	at bdi.h(SourceFile:275)
	at yx.i(SourceFile:417)
	at zo.b(SourceFile:201)
	at me.a(SourceFile:234)
	at zn.c(SourceFile:171)
	at net.minecraft.server.MinecraftServer.b(SourceFile:905)
	at net.minecraft.server.MinecraftServer.a(SourceFile:832)
	at enr.a(SourceFile:89)
	at net.minecraft.server.MinecraftServer.run(SourceFile:691)
	at java.lang.Thread.run(Thread.java:745)
      20w21a: entering_nether_crash_report.txt
      Description: Ticking player

java.lang.NullPointerException: Ticking player
	at yx.a(SourceFile:640)
	at any.bf(SourceFile:1885)
	at any.ad(SourceFile:438)
	at aoj.ad(SourceFile:312)
	at any.h(SourceFile:420)
	at aoj.h(SourceFile:2132)
	at bdi.h(SourceFile:275)
	at yx.i(SourceFile:417)
	at zo.b(SourceFile:201)
	at me.a(SourceFile:234)
	at zn.c(SourceFile:171)
	at net.minecraft.server.MinecraftServer.b(SourceFile:905)
	at net.minecraft.server.MinecraftServer.a(SourceFile:832)
	at enr.a(SourceFile:89)
	at net.minecraft.server.MinecraftServer.run(SourceFile:691)
	at java.lang.Thread.run(Thread.java:745)
      20w21a: sheep_entering_nether_crash_report.txt
      Description: Ticking entity

java.lang.NullPointerException: Ticking entity
	at any.a(SourceFile:2292)
	at any.bf(SourceFile:1885)
	at any.ad(SourceFile:438)
	at aoj.ad(SourceFile:312)
	at aok.ad(SourceFile:262)
	at any.h(SourceFile:420)
	at aoj.h(SourceFile:2132)
	at aok.h(SourceFile:329)
	at yw.a(SourceFile:627)
	at bpa.a(SourceFile:591)
	at yw.a(SourceFile:420)
	at net.minecraft.server.MinecraftServer.b(SourceFile:893)
	at net.minecraft.server.MinecraftServer.a(SourceFile:832)
	at enr.a(SourceFile:89)
	at net.minecraft.server.MinecraftServer.run(SourceFile:691)
	at java.lang.Thread.run(Thread.java:745)

        1. entering_end_crash_report.txt
          4 kB
        2. entering_nether_crash_report.txt
          3 kB
        3. sheep_entering_nether_crash_report.txt
          3 kB
        4. worldgen_settings_export.json
          0.6 kB

            fry [Mojang] Georgii Gavrichev
            Doctor5555 Doctor5555
            Votes:
            9 Vote for this issue
            Watchers:
            7 Start watching this issue

              Created:
              Updated:
              Resolved:
              CHK: