[21:05:23 INFO]: sakuraXuan left the game
[21:08:47 INFO]: UUID of player sakuraXuan is 3e9621f9-9242-44fd-aff3-0f74472ba1ca
[21:08:47 WARN]: [ViaBackwards] Custom worlds heights are NOT SUPPORTED for 1.16 players and older and may lead to errors!
[21:08:47 WARN]: [ViaBackwards] You have min/max set to -64/256
[21:08:47 WARN]: [ViaBackwards] Ignoring plugin channel in incoming REGISTER: FML
[21:08:47 WARN]: [ViaBackwards] Ignoring plugin channel in incoming REGISTER: FORGE
[21:08:47 ERROR]: Couldn't place player in world
net.minecraft.ReportedException: Sending packet
at net.minecraft.server.network.ServerGamePacketListenerImpl.send(ServerGamePacketListenerImpl.java:2225) ~[?:?]
at net.minecraft.server.network.ServerGamePacketListenerImpl.send(ServerGamePacketListenerImpl.java:2203) ~[?:?]
at net.minecraft.server.players.PlayerList.placeNewPlayer(PlayerList.java:293) ~[paper-1.20.1.jar:git-Paper-196]
at net.minecraft.server.network.ServerLoginPacketListenerImpl.placeNewPlayer(ServerLoginPacketListenerImpl.java:202) ~[?:?]
at net.minecraft.server.network.ServerLoginPacketListenerImpl.handleAcceptedLogin(ServerLoginPacketListenerImpl.java:183) ~[?:?]
at net.minecraft.server.network.ServerLoginPacketListenerImpl.tick(ServerLoginPacketListenerImpl.java:85) ~[?:?]
at net.minecraft.network.Connection.tick(Connection.java:602) ~[?:?]
at net.minecraft.server.network.ServerConnectionListener.tick(ServerConnectionListener.java:234) ~[?:?]
at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:1586) ~[paper-1.20.1.jar:git-Paper-196]
at net.minecraft.server.dedicated.DedicatedServer.tickChildren(DedicatedServer.java:446) ~[paper-1.20.1.jar:git-Paper-196]
at net.minecraft.server.MinecraftServer.tickServer(MinecraftServer.java:1393) ~[paper-1.20.1.jar:git-Paper-196]
at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:1170) ~[paper-1.20.1.jar:git-Paper-196]
at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:317) ~[paper-1.20.1.jar:git-Paper-196]
at java.lang.Thread.run(Thread.java:840) ~[?:?]
Caused by: java.lang.NullPointerException: type cannot be null
at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:907) ~[guava-31.1-jre.jar:?]
at com.comphenix.protocol.injector.StructureCache.getStructure(StructureCache.java:138) ~[ProtocolLib.jar:?]
at com.comphenix.protocol.events.PacketContainer.(PacketContainer.java:126) ~[ProtocolLib.jar:?]
at com.comphenix.protocol.injector.netty.manager.NetworkManagerInjector.onPacketSending(NetworkManagerInjector.java:96) ~[ProtocolLib.jar:?]
at com.comphenix.protocol.injector.netty.channel.NettyChannelInjector.processOutbound(NettyChannelInjector.java:553) ~[ProtocolLib.jar:?]
at com.comphenix.protocol.injector.netty.channel.NettyChannelInjector$2.doProxyRunnable(NettyChannelInjector.java:456) ~[ProtocolLib.jar:?]
at com.comphenix.protocol.injector.netty.channel.NettyEventLoopProxy.proxyRunnable(NettyEventLoopProxy.java:43) ~[ProtocolLib.jar:?]
at com.comphenix.protocol.injector.netty.channel.NettyEventLoopProxy.execute(NettyEventLoopProxy.java:252) ~[ProtocolLib.jar:?]
at net.minecraft.network.Connection.sendPacket(Connection.java:449) ~[?:?]
at net.minecraft.network.Connection.send(Connection.java:392) ~[?:?]
at net.minecraft.server.network.ServerGamePacketListenerImpl.send(ServerGamePacketListenerImpl.java:2217) ~[?:?]
... 13 more
[21:08:47 INFO]: sakuraXuan lost connection: Invalid player data
[21:08:47 INFO]: sakuraXuan left the game