Doesn't work on any premiumvanish servers for me....
[23:34:08] [Client thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_221]
at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_221]
at net.minecraft.util.Util.func_181617_a(Util.java:20) [g.class:?]
at net.minecraft.client.Minecraft.func_71411_J(Minecraft.java:1014) [ave.class:?]
at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:349) [ave.class:?]
at net.minecraft.client.main.Main.main(SourceFile:124) [Main.class:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_221]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_221]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_221]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_221]
at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
Caused by: java.lang.NullPointerException
at net.minecraft.scoreboard.Scoreboard.func_96511_d(SourceFile:229) ~[auo.class:?]
at net.minecraft.client.network.NetHandlerPlayClient.func_147247_a(NetHandlerPlayClient.java:1813) ~[bcy.class:?]
at net.minecraft.network.play.server.S3EPacketTeams.func_148833_a(SourceFile:113) ~[hr.class:?]
at net.minecraft.network.play.server.S3EPacketTeams.func_148833_a(SourceFile:13) ~[hr.class:?]
at net.minecraft.network.PacketThreadUtil$1.run(PacketThreadUtil.java:22) ~[fh$1.class:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_221]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_221]
at net.minecraft.util.Util.func_181617_a(Util.java:19) ~[g.class:?]
... 9 more