Plugin Help Error message for Mango HCF Plugin

[15:34:33 ERROR]: null
org.bukkit.command.CommandException: Unhandled exception executing command 'f' in plugin Mango v3.2-RELEASE
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:46) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:141) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
at org.bukkit.craftbukkit.v1_8_R3.CraftServer.dispatchCommand(CraftServer.java:641) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.PlayerConnection.handleCommand(PlayerConnection.java:1162) [spigot.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:997) [spigot.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:45) [spigot.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.PacketPlayInChat.a(PacketPlayInChat.java:1) [spigot.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [spigot.jar:git-Spigot-db6de12-18fbb24]
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_141]
at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_141]
at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [spigot.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:715) [spigot.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [spigot.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [spigot.jar:git-Spigot-db6de12-18fbb24]
at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [spigot.jar:git-Spigot-db6de12-18fbb24]
at java.lang.Thread.run(Unknown Source) [?:1.8.0_141]
Caused by: java.lang.NoClassDefFoundError: net/minecraft/util/org/apache/commons/lang3/StringUtils
at org.zencode.mango.commands.faction.CreateCommand.execute(CreateCommand.java:55) ~[?:?]
at org.zencode.mango.commands.FactionCommand.execute(FactionCommand.java:114) ~[?:?]
at org.zencode.mango.utils.command.BaseCommand.onCommand(BaseCommand.java:61) ~[?:?]
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
... 15 more
Caused by: java.lang.ClassNotFoundException: net.minecraft.util.org.apache.commons.lang3.StringUtils
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:91) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
at org.bukkit.plugin.java.PluginClassLoader.findClass(PluginClassLoader.java:86) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_141]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[?:1.8.0_141]
at org.zencode.mango.commands.faction.CreateCommand.execute(CreateCommand.java:55) ~[?:?]
at org.zencode.mango.commands.FactionCommand.execute(FactionCommand.java:114) ~[?:?]
at org.zencode.mango.utils.command.BaseCommand.onCommand(BaseCommand.java:61) ~[?:?]
at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44) ~[spigot.jar:git-Spigot-db6de12-18fbb24]
... 15 more


This is my error message

Can anyone tell me why this is happening? It happens when I do /f create

 

@QuestionableAim
Why are you still on 1.8? There is no reason to stay on an outdated version. Update your server.

The issue is that Mango was only built for 1.7, and does not work on newer versions. Find a another plugin.

 

Mango is a hcf plugin, and hcf is based on
1.7