java.lang.RuntimeException: Missing
	at net.minecraftforge.fml.server.FMLServerHandler.getClientToServerNetworkManager(FMLServerHandler.java:283)
	at net.minecraftforge.fml.common.FMLCommonHandler.getClientToServerNetworkManager(FMLCommonHandler.java:537)
	at net.minecraftforge.fml.common.network.FMLOutboundHandler$OutboundTarget$8.selectNetworks(FMLOutboundHandler.java:225)
	at net.minecraftforge.fml.common.network.FMLOutboundHandler.write(FMLOutboundHandler.java:273)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:658)
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:716)
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:651)
	at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:112)
	at io.netty.handler.codec.MessageToMessageCodec.write(MessageToMessageCodec.java:116)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:658)
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:716)
	at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:706)
	at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:741)
	at io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:895)
	at io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:240)
	at net.minecraftforge.fml.common.network.simpleimpl.SimpleNetworkWrapper.sendToServer(SimpleNetworkWrapper.java:269)