[00:51:20] [Server thread/FATAL] [net.minecraft.server.MinecraftServer]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NoClassDefFoundError: net/minecraft/client/audio/ISound
	at java.util.concurrent.FutureTask.report(Unknown Source) ~[?:1.8.0_231]
	at java.util.concurrent.FutureTask.get(Unknown Source) ~[?:1.8.0_231]
	at net.minecraft.util.Util.func_181617_a(Util.java:51) [h.class:?]
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:841) [MinecraftServer.class:?]
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:472) [nz.class:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:778) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:632) [MinecraftServer.class:?]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_231]
Caused by: java.lang.NoClassDefFoundError: net/minecraft/client/audio/ISound
	at gregtech.common.metatileentities.storage.MetaTileEntityWorkbench.createUI(MetaTileEntityWorkbench.java:223) ~[MetaTileEntityWorkbench.class:?]
	at gregtech.api.metatileentity.MetaTileEntityUIFactory.createUITemplate(MetaTileEntityUIFactory.java:30) ~[MetaTileEntityUIFactory.class:?]
	at gregtech.api.metatileentity.MetaTileEntityUIFactory.createUITemplate(MetaTileEntityUIFactory.java:16) ~[MetaTileEntityUIFactory.class:?]
	at gregtech.api.gui.UIFactory.openUI(UIFactory.java:39) ~[UIFactory.class:?]
	at gregtech.api.metatileentity.MetaTileEntity.onRightClick(MetaTileEntity.java:324) ~[MetaTileEntity.class:?]
	at gregtech.api.metatileentity.MetaTileEntity.onCoverRightClick(MetaTileEntity.java:302) ~[MetaTileEntity.class:?]
	at gregtech.api.block.machines.BlockMachine.func_180639_a(BlockMachine.java:295) ~[BlockMachine.class:?]
	at net.minecraft.server.management.PlayerInteractionManager.func_187251_a(PlayerInteractionManager.java:555) ~[or.class:?]
	at net.minecraft.network.NetHandlerPlayServer.func_184337_a(NetHandlerPlayServer.java:1128) ~[pa.class:?]
	at net.minecraft.network.play.client.CPacketPlayerTryUseItemOnBlock.func_148833_a(SourceFile:55) ~[ma.class:?]
	at net.minecraft.network.play.client.CPacketPlayerTryUseItemOnBlock.func_148833_a(SourceFile:11) ~[ma.class:?]
	at net.minecraft.network.PacketThreadUtil$1.run(SourceFile:13) ~[hv$1.class:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.8.0_231]
	at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_231]
	at net.minecraft.util.Util.func_181617_a(Util.java:50) ~[h.class:?]
	... 5 more