[21:12:44] [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_202]
at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_202]
at net.minecraft.util.Util.func_181617_a(SourceFile:47) [h.class:?]
at org.spongepowered.common.SpongeImplHooks.onUtilRunTask(SpongeImplHooks.java:301) [SpongeImplHooks.class:1.12.2-2768-7.1.6-RC3641]
at net.minecraft.server.MinecraftServer.redirect$onRun$zjo000(MinecraftServer.java:3955) [MinecraftServer.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_202]
Caused by: java.lang.NullPointerException
at net.minecraft.command.ServerCommandManager.func_71556_a(SourceFile:1084) ~[dh.class:?]
at net.minecraft.network.NetHandlerPlayServer.func_147361_d(NetHandlerPlayServer.java:960) ~[pa.class:?]
at net.minecraft.network.NetHandlerPlayServer.func_147354_a(NetHandlerPlayServer.java:939) ~[pa.class:?]
at net.minecraft.network.play.client.CPacketChatMessage.func_148833_a(SourceFile:37) ~[la.class:?]
at net.minecraft.network.play.client.CPacketChatMessage.func_148833_a(SourceFile:9) ~[la.class:?]
at org.spongepowered.common.event.tracking.phase.packet.PacketPhaseUtil.onProcessPacket(PacketPhaseUtil.java:193) ~[PacketPhaseUtil.class:1.12.2-2768-7.1.6-RC3641]
at net.minecraft.network.PacketThreadUtil$1.redirect$onProcessPacket$zlj000(SourceFile:539) ~[hv$1.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_202]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_202]
at net.minecraft.util.Util.func_181617_a(SourceFile:46) ~[h.class:?]