[21:37:58] [Server thread/FATAL] [net.minecraft.server.MinecraftServer]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NoSuchMethodError: org.spongepowered.api.command.args.CommandArgs.getSnapshot()Lorg/spongepowered/api/command/args/CommandArgs$Snapshot;
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_181]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_181]
	at net.minecraft.util.Util.func_181617_a(SourceFile:47) [h.class:?]
	at org.spongepowered.common.SpongeImplHooks.onUtilRunTask(SpongeImplHooks.java:288) [SpongeImplHooks.class:1.12.2-2705-7.1.0-BETA-3251]
	at net.minecraft.server.MinecraftServer.redirect$onRun$zjf000(MinecraftServer.java:3987) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:723) [MinecraftServer.class:?]
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:396) [nz.class:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:668) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526) [MinecraftServer.class:?]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_181]
Caused by: java.lang.NoSuchMethodError: org.spongepowered.api.command.args.CommandArgs.getSnapshot()Lorg/spongepowered/api/command/args/CommandArgs$Snapshot;
	at io.github.nucleuspowered.nucleus.internal.command.AbstractCommand.getSuggestions(AbstractCommand.java:558) ~[AbstractCommand.class:1.6.1-S7.1]
	at org.spongepowered.api.command.dispatcher.SimpleDispatcher.getSuggestions(SimpleDispatcher.java:360) ~[SimpleDispatcher.class:1.12.2-2705-7.1.0-BETA-3251]
	at org.spongepowered.common.command.SpongeCommandManager.getSuggestions(SpongeCommandManager.java:390) ~[SpongeCommandManager.class:1.12.2-2705-7.1.0-BETA-3251]
	at net.minecraft.server.MinecraftServer.redirect$onGetTabCompletionOptions$zjf000(MinecraftServer.java:3755) ~[MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.func_184104_a(MinecraftServer.java:920) ~[MinecraftServer.class:?]
	at net.minecraft.network.NetHandlerPlayServer.func_147341_a(NetHandlerPlayServer.java:1347) ~[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 org.spongepowered.common.network.PacketUtil.onProcessPacket(PacketUtil.java:148) ~[PacketUtil.class:1.12.2-2705-7.1.0-BETA-3251]
	at net.minecraft.network.PacketThreadUtil$1.redirect$onProcessPacket$zla000(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_181]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_181]
	at net.minecraft.util.Util.func_181617_a(SourceFile:46) ~[h.class:?]
	... 7 more
[21:38:00] [Server thread/FATAL] [net.minecraft.server.MinecraftServer]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NoSuchMethodError: org.spongepowered.api.command.args.CommandArgs.getSnapshot()Lorg/spongepowered/api/command/args/CommandArgs$Snapshot;
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_181]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_181]
	at net.minecraft.util.Util.func_181617_a(SourceFile:47) [h.class:?]
	at org.spongepowered.common.SpongeImplHooks.onUtilRunTask(SpongeImplHooks.java:288) [SpongeImplHooks.class:1.12.2-2705-7.1.0-BETA-3251]
	at net.minecraft.server.MinecraftServer.redirect$onRun$zjf000(MinecraftServer.java:3987) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:723) [MinecraftServer.class:?]
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:396) [nz.class:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:668) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:526) [MinecraftServer.class:?]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_181]
Caused by: java.lang.NoSuchMethodError: org.spongepowered.api.command.args.CommandArgs.getSnapshot()Lorg/spongepowered/api/command/args/CommandArgs$Snapshot;
	at io.github.nucleuspowered.nucleus.internal.command.AbstractCommand.getSuggestions(AbstractCommand.java:558) ~[AbstractCommand.class:1.6.1-S7.1]
	at org.spongepowered.api.command.dispatcher.SimpleDispatcher.getSuggestions(SimpleDispatcher.java:360) ~[SimpleDispatcher.class:1.12.2-2705-7.1.0-BETA-3251]
	at org.spongepowered.common.command.SpongeCommandManager.getSuggestions(SpongeCommandManager.java:390) ~[SpongeCommandManager.class:1.12.2-2705-7.1.0-BETA-3251]
	at net.minecraft.server.MinecraftServer.redirect$onGetTabCompletionOptions$zjf000(MinecraftServer.java:3755) ~[MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.func_184104_a(MinecraftServer.java:920) ~[MinecraftServer.class:?]
	at net.minecraft.network.NetHandlerPlayServer.func_147341_a(NetHandlerPlayServer.java:1347) ~[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 org.spongepowered.common.network.PacketUtil.onProcessPacket(PacketUtil.java:148) ~[PacketUtil.class:1.12.2-2705-7.1.0-BETA-3251]
	at net.minecraft.network.PacketThreadUtil$1.redirect$onProcessPacket$zla000(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_181]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_181]
	at net.minecraft.util.Util.func_181617_a(SourceFile:46) ~[h.class:?]
	... 7 more