See #688

[18:01:38] [Server thread/WARN] [net.minecraft.command.CommandHandler]: Couldn't process command: aim catlist
java.lang.NoClassDefFoundError: net/minecraft/client/resources/I18n
at cn.academy.ability.Category.getDisplayName(Category.java:168) ~[Category.class:?]
at cn.academy.command.CommandAIMBase.matchCommands(CommandAIMBase.java:183) ~[CommandAIMBase.class:?]
at cn.academy.command.CommandAIMBase$CommandAIM.func_184881_a(CommandAIMBase.java:85) ~[CommandAIMBase$CommandAIM.class:?]
at net.minecraft.command.CommandHandler.func_175786_a(CommandHandler.java:127) [bj.class:?]
at net.minecraft.command.CommandHandler.func_71556_a(CommandHandler.java:99) [bj.class:?]
at catserver.server.command.CraftSimpleCommandMap.dispatch(CraftSimpleCommandMap.java:51) [CraftSimpleCommandMap.class:pro(free)-181231]
at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchVanillaCommand(CraftServer.java:713) [CraftServer.class:pro(free)-181231]
at org.bukkit.craftbukkit.v1_12_R1.CraftServer.dispatchCommand(CraftServer.java:708) [CraftServer.class:pro(free)-181231]
at net.minecraft.network.NetHandlerPlayServer.func_147361_d(NetHandlerPlayServer.java:1591) [pa.class:?]
at net.minecraft.network.NetHandlerPlayServer.func_147354_a(NetHandlerPlayServer.java:1436) [pa.class:?]
at net.minecraft.network.play.client.CPacketChatMessage.func_148833_a(CPacketChatMessage.java:38) [la.class:?]
at net.minecraft.network.play.client.CPacketChatMessage.func_148833_a(CPacketChatMessage.java:8) [la.class:?]
at net.minecraft.network.PacketThreadUtil$1.run(PacketThreadUtil.java:15) [hv$1.class:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_192]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_192]
at net.minecraft.util.Util.func_181617_a(Util.java:50) [h.class:?]
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:841) [MinecraftServer.class:?]
at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:472) [nz.class:?]
at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:778) [MinecraftServer.class:?]
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:632) [MinecraftServer.class:?]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_192]