Does anyone know what this error means? it came when i tried setting the trait of an npc to become a sentry in the citizens plugin and said please report this error: [See console] java.lang.NoClassDefFoundError:net/minecraft/server/v1_7_R1/World. I am using bukkit 1.7.9 RD.3 currently on my server. Please help
Edit: Oh wait nevermind i have just found out it was outdated and brought it back to the latest version
