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Bug
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Resolution: Fixed
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Minor
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None
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None
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This server is running CraftBukkit version git-Spigot-6f4ff1b-983305b (MC: 1.16.1) (Implementing API version 1.16.1-R0.1-SNAPSHOT)
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Yes
Error Log
[23:54:42] [User Authenticator #2/INFO]: UUID of player PureGero is 6e397a6e-42db-46b3-9ac3-581c233499b6 [23:54:42] [Server thread/WARN]: Unknown respawn dimension ResourceKey[minecraft:dimension / minecraft:test], defaulting to overworld [23:54:42] [Server thread/WARN]: Failed to handle packet for /127.0.0.1:58681 java.lang.NullPointerException: null at net.minecraft.server.v1_16_R1.PlayerList.a(PlayerList.java:168) ~[spigot-1.16.1.jar:git-Spigot-6f4ff1b-983305b] at net.minecraft.server.v1_16_R1.LoginListener.c(LoginListener.java:153) ~[spigot-1.16.1.jar:git-Spigot-6f4ff1b-983305b] at net.minecraft.server.v1_16_R1.LoginListener.tick(LoginListener.java:52) ~[spigot-1.16.1.jar:git-Spigot-6f4ff1b-983305b] at net.minecraft.server.v1_16_R1.NetworkManager.a(NetworkManager.java:219) ~[spigot-1.16.1.jar:git-Spigot-6f4ff1b-983305b] at net.minecraft.server.v1_16_R1.ServerConnection.c(ServerConnection.java:128) ~[spigot-1.16.1.jar:git-Spigot-6f4ff1b-983305b] at net.minecraft.server.v1_16_R1.MinecraftServer.b(MinecraftServer.java:1128) ~[spigot-1.16.1.jar:git-Spigot-6f4ff1b-983305b] at net.minecraft.server.v1_16_R1.DedicatedServer.b(DedicatedServer.java:354) ~[spigot-1.16.1.jar:git-Spigot-6f4ff1b-983305b] at net.minecraft.server.v1_16_R1.MinecraftServer.a(MinecraftServer.java:1009) ~[spigot-1.16.1.jar:git-Spigot-6f4ff1b-983305b] at net.minecraft.server.v1_16_R1.MinecraftServer.v(MinecraftServer.java:848) ~[spigot-1.16.1.jar:git-Spigot-6f4ff1b-983305b] at net.minecraft.server.v1_16_R1.MinecraftServer.lambda$0(MinecraftServer.java:164) ~[spigot-1.16.1.jar:git-Spigot-6f4ff1b-983305b] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_131] [23:54:42] [Server thread/INFO]: PureGero lost connection: Internal server error [23:54:42] [Server thread/INFO]: PureGero left the game
Steps to reproduce
- Install the MultiVerse plugin
- Create a new world with multiverse with `/mv create test normal`
- Enter the world with `/mvtp test`
- Log off from the server
- From the console, delete the new world with `/mv delete test` and `/mvconfirm`
- Attempt to log back into the server but be disconnected due to the NPE
(Note that multiverse isn't the cause of the error, it's just a handy plugin to reliably reproduce it)
What should happen
I should get moved to the default world instead of being disconnected from the server (as suggested by the warning preceding the error)
Potentially how to resolve
I haven't been able to test this fix due to my current environment, but in Spigot/CraftBukkit-Patches/0008-View-Distance.patch, line 18:
playerconnection.sendPacket(new PacketPlayOutLogin(entityplayer.getId(), entityplayer.playerInteractManager.getGameMode(), entityplayer.playerInteractManager.c(), BiomeManager.a(worldserver1.getSeed()), worlddata.isHardcore(), this.server.E(), this.s, worldserver1.getTypeKey(), worldserver1.getDimensionKey(), this.getMaxPlayers(), worldserver.spigotConfig.viewDistance, flag1, !flag, worldserver1.isDebugWorld(), worldserver1.isFlatWorld()));
change `worldserver.spigotConfig.viewDistance` to `worldserver1.spigotConfig.viewDistance` as `worldserver` is potentially null at this location.
