[04:37:17] [main/FATAL]: Failed to start the minecraft server
java.lang.ClassCastException: net.minecraftforge.fml.common.MinecraftDummyContainer cannot be cast to org.spongepowered.api.plugin.PluginContainer
	at net.minecraft.command.ServerCommandManager.wrapCommand(SourceFile:50) ~[cl.class:?]
	at net.minecraft.command.ServerCommandManager.func_71560_a(SourceFile:99) ~[cl.class:?]
	at net.minecraft.command.ServerCommandManager.<init>(SourceFile:14) ~[cl.class:?]
	at net.minecraft.server.MinecraftServer.func_175582_h(MinecraftServer.java:177) ~[MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.<init>(MinecraftServer.java:168) ~[MinecraftServer.class:?]
	at net.minecraft.server.dedicated.DedicatedServer.<init>(DedicatedServer.java:57) ~[po.class:?]
	at net.minecraft.server.MinecraftServer.main(MinecraftServer.java:1485) [MinecraftServer.class:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_66]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_66]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_66]
	at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_66]
	at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]
	at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_66]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_66]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_66]
	at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_66]
	at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.run(ServerLaunchWrapper.java:43) [custom.jar:?]
	at net.minecraftforge.fml.relauncher.ServerLaunchWrapper.main(ServerLaunchWrapper.java:12) [custom.jar:?]