Plugin Help [Enjin Minecraft Plugin] Your permissions plugin is not configured correctly.

Can Someone Help please? I don't know whats wrong with my config.

Code:

groups:
  default:
    default: false
    permissions:
    - modifyworld.*
    options:
      rank: '800'
  Member:
    prefix: '&0[&aMember&0] &a'
    suffix: '&2'
    default: true
    permissions:
    - factions.kit.fullplayer
    - sg.arena.join.*
    - sg.lobby.join
    - sg.spectate
    - sg.vote
    - sg.join.*
    - essentials.afk
    - essentials.back
    - essentials.back.ondeath
    - essentials.balance
    - essentials.delhome
    - essentials.home
    - essentials.ignore
    - essentials.itemdb
    - essentials.kit
    - essentials.kit.Member
    - essentials.mail
    - essentials.mail.send
    - essentials.me
    - essentials.msg
    - essentials.pay
    - essentials.sethome
    - essentials.signs.use.*
    - essentials.suicide
    - essentials.time
    - essentials.tpa
    - essentials.tpaccept
    - essentials.tpahere
    - essentials.tpdeny
    - essentials.warp
    - sg.arena.vote
    - sg.lobby.join
    - sg.arena.spectate
    - essentials.help
    - essentials.helpop
    - essentials.list
    - essentials.motd
    - essentials.rules
    - essentials.spawn
    - sg.arena.join
    inheritance:
    - Default
    options:
      rank: '700'
  Mod:
    prefix: '&0[&5Moderator§0]&5'
    suffix: '&b'
    permissions:
    - factions.kit.fullplayer
    - bukkit.command.kick
    - bukkit.command.invsee
    - bukkit.command.tempban
    - essentials.ext
    - essentials.fly
    - essentials.jails
    - essentials.jump
    - essentials.kick
    - essentials.kick.notify
    - essentials.kit.Member
    - essentials.mute
    - essentials.togglejail
    - essentials.tp
    - essentials.tphere
    - essentials.tptoggle
    - essentials.vanish
    - essentials.world
    - essentials.world.*
    inheritance:
    - Member
    options:
      rank: '300'
  Admin:
    prefix: '&0[&9Admin&0]&8'
    suffix: '&5'
    permissions:
    - factions.kit.fullplayer
    - bukkit.command.ban
    - bukkit.command.ban.ip
    - bukkit.command.ban.player
    - bukkit.command.gamemode
    - bukkit.command.kick
    - bukkit.command.invsee
    - bukkit.command.unban
    - bukkit.command.unban.player
    - bukkit.broadcast
    - bukkit.command.give
    - bukkit.command.help
    - bukkit.command.kill
    - bukkit.command.list
    - bukkit.command.me
    - bukkit.command.plugins
    - bukkit.command.say
    - bukkit.command.teleport
    - bukkit.command.tell
    - bukkit.command.time
    - bukkit.command.time.add
    - bukkit.command.time.set
    inheritance:
    - Mod
    options:
      rank: '200'
  Developer:
    prefix: '&0[&6Developer&0]'
    suffix: '&4'
    permissions:
    - factions.kit.fullplayer
    - -vanish.*
    - '*'
    inheritance:
    - Admin
    options:
      rank: '100'
    worlds:
      §d:
        prefix: '&0[&6Developer&0]'
  Owner:
    prefix: '&0[&4Owner&0]'
    suffix: '&4'
    permissions:
    - factions.kit.fullplayer
    - -vanish.*
    - '*'
    inheritance:
    - Developer
    options:
      rank: '0'
    worlds:
      §d:
        prefix: '&0[&4Owner&0]'
users: