如图，报错出以下信心，java.lang.NoSuchMethodError: org.bukkit.entity.Entity.getCustomName()Ljava/lang/String;
        at com.earth2me.essentials.commands.Commandremove.removeHandler(Commandremove.java:132) ~[EssentialsX.jar:?]
        at com.earth2me.essentials.commands.Commandremove.parseCommand(Commandremove.java:82) ~[EssentialsX.jar:?]
        at com.earth2me.essentials.commands.Commandremove.run(Commandremove.java:43) ~[EssentialsX.jar:?]
        at com.earth2me.essentials.commands.EssentialsCommand.run(EssentialsCommand.java:146) ~[EssentialsX.jar:?]
        at com.earth2me.essentials.Essentials.onCommandEssentials(Essentials.java:465) [EssentialsX.jar:?]
        at com.earth2me.essentials.Essentials.onCommand(Essentials.java:375) [EssentialsX.jar:?]
        at pw.yumc.Yum.inject.CommandInjector.onCommand(CommandInjector.java:109) [Yum.jar:?]
        at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) [paperspigot-1.7.10-R0.1-20150806-7.jar:git-PaperSpigot-b143438]
        at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:181) [paperspigot-1.7.10-R0.1-20150806-7.jar:git-PaperSpigot-b143438]
        at org.bukkit.craftbukkit.v1_7_R4.CraftServer.dispatchCommand(CraftServer.java:765) [paperspigot-1.7.10-R0.1-20150806-7.jar:git-PaperSpigot-b143438]
        at net.minecraft.server.v1_7_R4.PlayerConnection.handleCommand(PlayerConnection.java:1047) [paperspigot-1.7.10-R0.1-20150806-7.jar:git-PaperSpigot-b143438]
        at net.minecraft.server.v1_7_R4.PlayerConnection.a(PlayerConnection.java:884) [paperspigot-1.7.10-R0.1-20150806-7.jar:git-PaperSpigot-b143438]
        at net.minecraft.server.v1_7_R4.PacketPlayInChat.a(PacketPlayInChat.java:28) [paperspigot-1.7.10-R0.1-20150806-7.jar:git-PaperSpigot-b143438]
        at net.minecraft.server.v1_7_R4.PacketPlayInChat.handle(PacketPlayInChat.java:65) [paperspigot-1.7.10-R0.1-20150806-7.jar:git-PaperSpigot-b143438]
        at net.minecraft.server.v1_7_R4.NetworkManager.a(NetworkManager.java:189) [paperspigot-1.7.10-R0.1-20150806-7.jar:git-PaperSpigot-b143438]
        at net.minecraft.server.v1_7_R4.ServerConnection.c(ServerConnection.java:81) [paperspigot-1.7.10-R0.1-20150806-7.jar:git-PaperSpigot-b143438]
        at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:795) [paperspigot-1.7.10-R0.1-20150806-7.jar:git-PaperSpigot-b143438]
        at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:307) [paperspigot-1.7.10-R0.1-20150806-7.jar:git-PaperSpigot-b143438]
        at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:643) [paperspigot-1.7.10-R0.1-20150806-7.jar:git-PaperSpigot-b143438]
        at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:549) [paperspigot-1.7.10-R0.1-20150806-7.jar:git-PaperSpigot-b143438]
        at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [paperspigot-1.7.10-R0.1-20150806-7.jar:git-PaperSpigot-b143438]
>

求解，而且mv插件的清除怪物的指令也无效！但是显示成功清除！

可能ess版本过新，尝试匹配版本

用/killall all试试？