[18:17:44] [Server thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NoClassDefFoundError: net/minecraft/client/Minecraft
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_51]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_51]
	at net.minecraft.util.Util.func_181617_a(SourceFile:46) [h.class:?]
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:668) [MinecraftServer.class:?]
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:387) [ld.class:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:613) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:471) [MinecraftServer.class:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_51]
Caused by: java.lang.NoClassDefFoundError: net/minecraft/client/Minecraft
	at p455w0rd.p455w0rdsthings.handlers.EventsHandler.onEntityRClick(EventsHandler.java:368) ~[EventsHandler.class:?]
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_558_EventsHandler_onEntityRClick_PlayerInteractEvent.invoke(.dynamic) ~[?:?]
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90) ~[ASMEventHandler.class:?]
	at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:168) ~[EventBus.class:?]
	at net.minecraftforge.common.ForgeHooks.onInteractEntityAt(ForgeHooks.java:978) ~[ForgeHooks.class:?]
	at net.minecraft.network.NetHandlerPlayServer.func_147340_a(NetHandlerPlayServer.java:1028) ~[me.class:?]
	at net.minecraft.network.play.client.CPacketUseEntity.func_148833_a(SourceFile:68) ~[iu.class:?]
	at net.minecraft.network.play.client.CPacketUseEntity.func_148833_a(SourceFile:12) ~[iu.class:?]
	at net.minecraft.network.PacketThreadUtil$1.run(SourceFile:13) ~[fl$1.class:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_51]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_51]
	at net.minecraft.util.Util.func_181617_a(SourceFile:45) ~[h.class:?]
	... 5 more