This seems more just spammy than anything but it doesn't autocomplete either.
[05:31:41] [Server thread/FATAL] [minecraft/MinecraftServer]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_232-ea]
at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_232-ea]
at net.minecraft.util.Util.func_181617_a(SourceFile:47) [h.class:?]
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:723) [MinecraftServer.class:?]
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:397) [nz.class:?]
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:668) [MinecraftServer.class:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526) [MinecraftServer.class:?]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_232-ea]
Caused by: java.lang.NullPointerException
at net.minecraft.server.MinecraftServer.func_184104_a(MinecraftServer.java:922) ~[MinecraftServer.class:?]
at net.minecraft.network.NetHandlerPlayServer.func_147341_a(NetHandlerPlayServer.java:1351) ~[pa.class:?]
at net.minecraft.network.play.client.CPacketTabComplete.func_148833_a(SourceFile:52) ~[kz.class:?]
at net.minecraft.network.play.client.CPacketTabComplete.func_148833_a(SourceFile:11) ~[kz.class:?]
at net.minecraft.network.PacketThreadUtil$1.run(SourceFile:13) ~[hv$1.class:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_232-ea]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_232-ea]
at net.minecraft.util.Util.func_181617_a(SourceFile:46) ~[h.class:?]
... 5 more
This seems more just spammy than anything but it doesn't autocomplete either.
Minecraft 1.12.2, Forge 14.23.5.2847, Pack Crackpack 3 3.0.6