[12:58:34] [Server thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NoClassDefFoundError: net/darkhax/tesla/capability/TeslaCapabilities
	at java.util.concurrent.FutureTask.report(Unknown Source) ~[?:1.8.0_141]
	at java.util.concurrent.FutureTask.get(Unknown Source) ~[?:1.8.0_141]
	at net.minecraft.util.Util.func_181617_a(SourceFile:47) [h.class:?]
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:721) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:666) [MinecraftServer.class:?]
	at net.minecraft.server.integrated.IntegratedServer.func_71217_p(IntegratedServer.java:185) [chd.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:524) [MinecraftServer.class:?]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_141]
Caused by: java.lang.NoClassDefFoundError: net/darkhax/tesla/capability/TeslaCapabilities
	at io.github.mosadie.ExponentialPower.TileEntitys.EnderGeneratorTE.hasCapability(EnderGeneratorTE.java:44) ~[EnderGeneratorTE.class:?]
	at com.raoulvdberge.refinedstorage.apiimpl.network.NetworkNodeListener.onBlockBreak(NetworkNodeListener.java:62) ~[NetworkNodeListener.class:?]
	at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_1088_NetworkNodeListener_onBlockBreak_BreakEvent.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:179) ~[EventBus.class:?]
	at net.minecraftforge.common.ForgeHooks.onBlockBreakEvent(ForgeHooks.java:807) ~[ForgeHooks.class:?]
	at net.minecraft.server.management.PlayerInteractionManager.func_180237_b(PlayerInteractionManager.java:284) ~[or.class:?]
	at net.minecraft.server.management.PlayerInteractionManager.func_180784_a(PlayerInteractionManager.java:155) ~[or.class:?]
	at net.minecraft.network.NetHandlerPlayServer.func_147345_a(NetHandlerPlayServer.java:683) ~[pa.class:?]
	at net.minecraft.network.play.client.CPacketPlayerDigging.func_148833_a(SourceFile:40) ~[lp.class:?]
	at net.minecraft.network.play.client.CPacketPlayerDigging.func_148833_a(SourceFile:10) ~[lp.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_141]
	at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_141]
	at net.minecraft.util.Util.func_181617_a(SourceFile:46) ~[h.class:?]
	... 5 more