本帖最后由 king丶北辰 于 2020-4-22 20:04 编辑

[18:30:37 WARN]: More than one exception was raised. Will report only the first one and log others.
java.lang.RuntimeException: Missing
        at cpw.mods.fml.server.FMLServerHandler.getClientToServerNetworkManager(FMLServerHandler.java:238) ~[FMLServerHandler.class:1.7.10-1614.58]
        at cpw.mods.fml.common.FMLCommonHandler.getClientToServerNetworkManager(FMLCommonHandler.java:544) ~[FMLCommonHandler.class:1.7.10-1614.58]
        at cpw.mods.fml.common.network.FMLOutboundHandler$OutboundTarget$8.selectNetworks(FMLOutboundHandler.java:226) ~[FMLOutboundHandler$OutboundTarget$8.class:1.7.10-1614.58]
        at cpw.mods.fml.common.network.FMLOutboundHandler.write(FMLOutboundHandler.java:274) ~[FMLOutboundHandler.class:1.7.10-1614.58]
        at io.netty.channel.DefaultChannelHandlerContext.invokeWrite(DefaultChannelHandlerContext.java:644) ~[DefaultChannelHandlerContext.class:?]
        at io.netty.channel.DefaultChannelHandlerContext.write(DefaultChannelHandlerContext.java:698) ~[DefaultChannelHandlerContext.class:?]
        at io.netty.channel.DefaultChannelHandlerContext.write(DefaultChannelHandlerContext.java:637) ~[DefaultChannelHandlerContext.class:?]
        at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:115) ~[MessageToMessageEncoder.class:?]
        at io.netty.handler.codec.MessageToMessageCodec.write(MessageToMessageCodec.java:116) ~[MessageToMessageCodec.class:?]
        at io.netty.channel.DefaultChannelHandlerContext.invokeWrite(DefaultChannelHandlerContext.java:644) ~[DefaultChannelHandlerContext.class:?]
        at io.netty.channel.DefaultChannelHandlerContext.write(DefaultChannelHandlerContext.java:698) ~[DefaultChannelHandlerContext.class:?]
        at io.netty.channel.DefaultChannelHandlerContext.writeAndFlush(DefaultChannelHandlerContext.java:688) ~[DefaultChannelHandlerContext.class:?]
        at io.netty.channel.DefaultChannelHandlerContext.writeAndFlush(DefaultChannelHandlerContext.java:717) ~[DefaultChannelHandlerContext.class:?]
        at io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:893) ~[DefaultChannelPipeline.class:?]
        at io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:239) ~[AbstractChannel.class:?]
        at cpw.mods.fml.common.network.simpleimpl.SimpleNetworkWrapper.sendToServer(SimpleNetworkWrapper.java:236) [SimpleNetworkWrapper.class:1.7.10-1614.58]
        at net.geforcemods.securitycraft.containers.BriefcaseInventory.writeToNBT(BriefcaseInventory.java:64) [BriefcaseInventory.class:?]
        at net.geforcemods.securitycraft.containers.BriefcaseInventory.func_70296_d(BriefcaseInventory.java:118) [BriefcaseInventory.class:?]
        at net.geforcemods.securitycraft.containers.BriefcaseInventory.func_70299_a(BriefcaseInventory.java:96) [BriefcaseInventory.class:?]
        at net.geforcemods.securitycraft.containers.SlotItemRestricted.func_75215_d(SlotItemRestricted.java:33) [SlotItemRestricted.class:?]
        at net.minecraft.inventory.Container.func_75144_a(Container.java:530) [zs.class:?]
        at net.geforcemods.securitycraft.containers.ContainerBriefcase.func_75144_a(ContainerBriefcase.java:79) [ContainerBriefcase.class:?]
        at net.minecraft.network.NetHandlerPlayServer.func_147351_a(NetHandlerPlayServer.java:2075) [nh.class:?]
        at net.minecraft.network.play.client.C0EPacketClickWindow.func_148833_a(SourceFile:32) [ix.class:?]
        at net.minecraft.network.play.client.C0EPacketClickWindow.func_148833_a(SourceFile:10) [ix.class:?]
        at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:245) [ej.class:?]
        at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:181) [nc.class:?]
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:1023) [MinecraftServer.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:432) [lt.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:841) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:693) [MinecraftServer.class:?]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_231]

[18:30:37 ERROR]: FMLIndexedMessageCodec exception caught
java.lang.RuntimeException: Missing
        at cpw.mods.fml.server.FMLServerHandler.getClientToServerNetworkManager(FMLServerHandler.java:238) ~[FMLServerHandler.class:1.7.10-1614.58]
        at cpw.mods.fml.common.FMLCommonHandler.getClientToServerNetworkManager(FMLCommonHandler.java:544) ~[FMLCommonHandler.class:1.7.10-1614.58]
        at cpw.mods.fml.common.network.FMLOutboundHandler$OutboundTarget$8.selectNetworks(FMLOutboundHandler.java:226) ~[FMLOutboundHandler$OutboundTarget$8.class:1.7.10-1614.58]
        at cpw.mods.fml.common.network.FMLOutboundHandler.write(FMLOutboundHandler.java:274) ~[FMLOutboundHandler.class:1.7.10-1614.58]
        at io.netty.channel.DefaultChannelHandlerContext.invokeWrite(DefaultChannelHandlerContext.java:644) ~[DefaultChannelHandlerContext.class:?]
        at io.netty.channel.DefaultChannelHandlerContext.write(DefaultChannelHandlerContext.java:698) ~[DefaultChannelHandlerContext.class:?]
        at io.netty.channel.DefaultChannelHandlerContext.write(DefaultChannelHandlerContext.java:637) ~[DefaultChannelHandlerContext.class:?]
        at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:115) ~[MessageToMessageEncoder.class:?]
        at io.netty.handler.codec.MessageToMessageCodec.write(MessageToMessageCodec.java:116) ~[MessageToMessageCodec.class:?]
        at io.netty.channel.DefaultChannelHandlerContext.invokeWrite(DefaultChannelHandlerContext.java:644) ~[DefaultChannelHandlerContext.class:?]
        at io.netty.channel.DefaultChannelHandlerContext.write(DefaultChannelHandlerContext.java:698) ~[DefaultChannelHandlerContext.class:?]
        at io.netty.channel.DefaultChannelHandlerContext.writeAndFlush(DefaultChannelHandlerContext.java:688) ~[DefaultChannelHandlerContext.class:?]
        at io.netty.channel.DefaultChannelHandlerContext.writeAndFlush(DefaultChannelHandlerContext.java:717) ~[DefaultChannelHandlerContext.class:?]
        at io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:893) ~[DefaultChannelPipeline.class:?]
        at io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:239) ~[AbstractChannel.class:?]
        at cpw.mods.fml.common.network.simpleimpl.SimpleNetworkWrapper.sendToServer(SimpleNetworkWrapper.java:236) [SimpleNetworkWrapper.class:1.7.10-1614.58]
        at net.geforcemods.securitycraft.containers.BriefcaseInventory.writeToNBT(BriefcaseInventory.java:64) [BriefcaseInventory.class:?]
        at net.geforcemods.securitycraft.containers.BriefcaseInventory.func_70296_d(BriefcaseInventory.java:118) [BriefcaseInventory.class:?]
        at net.minecraft.inventory.Slot.func_75218_e(Slot.java:83) [aay.class:?]
        at net.geforcemods.securitycraft.containers.SlotItemRestricted.func_75215_d(SlotItemRestricted.java:34) [SlotItemRestricted.class:?]
        at net.minecraft.inventory.Container.func_75144_a(Container.java:530) [zs.class:?]
        at net.geforcemods.securitycraft.containers.ContainerBriefcase.func_75144_a(ContainerBriefcase.java:79) [ContainerBriefcase.class:?]
        at net.minecraft.network.NetHandlerPlayServer.func_147351_a(NetHandlerPlayServer.java:2075) [nh.class:?]
        at net.minecraft.network.play.client.C0EPacketClickWindow.func_148833_a(SourceFile:32) [ix.class:?]
        at net.minecraft.network.play.client.C0EPacketClickWindow.func_148833_a(SourceFile:10) [ix.class:?]
        at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:245) [ej.class:?]
        at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:181) [nc.class:?]
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:1023) [MinecraftServer.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:432) [lt.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:841) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:693) [MinecraftServer.class:?]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_231]

你升级一下forge的版本试试

服务端怎么升级?

既然隔壁贴已经教你解决方法了，我教你怎么判断吧



看这一段，at后面是不是有个东西一直在重复？
傻瓜式判断，net肯定不是，net后面的geforcemods，去百度搜一下
可以看到，也不是

那就再搜securitycraft，可以看到，是安全工艺security craft的锅了（懂了吧
一般包名都会写模组/插件名称的，懂的人直接看就是了
不懂的就一个个搜

主要回复这短话是想给以后有的人不懂，找到这个贴能自己学会看一点报错（真正学报错还得看专门教的贴）

你先查看你现在的forge版本