Groups.yml Error :(

default: Peasant
groups:
  Peasant:
    permissions:
    - my.permission
    - essentials.warp
    - essentials.warps
    - essentials.warps.Hub
    - essentials.warps.Survival
    - essentials.warps.Factions
    - essentials.warps.KitPvP
    - essentials.warps.FactionsHelp
    - essentials.warps.Donate
    - essentials.warps.Ranks
    - essentials.kits
    - essentials.kit
    - essentials.list
    - essentials.balance
    - essentials.balancetop
    - essentials.build
    - essentials.delhome
    - essentials.essentials
    - essentials.hat
    - essentials.help
    - essentials.home
    - essentials.home.bed
    - essentials.ignore
    - essentials.info
    - essentials.jails
    - essentials.kit
    - essentials.kits.User
    - essentials.list
    - essentials.mail
    - essentials.mail.send
    - essentials.motd
    - essentials.msg
    - essentials.msg.color
    - essentials.msg.format
    - essentials.msg.magic
    - essentials.msg.url
    - essentials.pay
    - essentials.rules
    - essentials.sell
    - essentials.sethome
    - essentials.sethome.bed
    - essentials.sethome.multiple
    - essentials.sethome.multiple.5
    - essentials.signs.use.balance
    - essentials.signs.use.buy
    - essentials.signs.use.disposal
    - essentials.signs.use.free
    - essentials.signs.use.heal
    - essentials.signs.use.info
    - essentials.signs.use.kit
    - essentials.signs.use.mail
    - essentials.signs.use.sell
    - essentials.signs.use.trade
    - essentials.signs.use.warp
    - essentials.spawn
    - essentials.suicide
    - essentials.tpa
    - essentials.tpaccept
    - chestcommands.command.open
    - chestcommands.item.main-menu.yml
    - essentials
    - essentials.tpdeny
    - simpleregionmarket.signs.use.*
    - silkspawners.silkdrop.*
    - silkspawners.changetype.Zombie
    - silkspawners.changetype.Cow
    - essentials.spawner.cow
    - essentials.spawner.Zombie
    - simpleregionmarket.addmember
    - simpleregionmarket.remmember
    - custom.help.use
    groups:
      groups: []
    meta:
      prefix: '&7[Peasant]'
      priority: '1'
  Servant:
    permissions:
    - essentials.warps.Servant
    - essentials.kits.Servant
    - essentials.sethome.multiple.8
    - essentials.warps.exp
    - essentials.warps.xp
    - simpleregionmarket.signs.create.let
    - essentials.recipe
    - silkspawners.changetype.Skeleton
    - silkspawners.changetype.Chicken
    - essentials.spawner.Chicken
    - essentials.spawner.Skeleton
    groups:
      groups: [Peasant]
    meta:
      prefix: '&2[Servant]'
      priority: '1'
  Merchant:
    permissions
    - essentials.kits.Merchant
    - essentials.warps.Merchant
    - essentials.me
    - essentials.near
    - essentials.near.others
    - essentials.itemdb
    - essentials.getpos
    - essentials.afk
    - essentials.afk.kickexempt
    - essentials.workbench
    groups:
      groups: [Servant]
    meta:
      prefix: '&f[Merchant]'
      priority: '3'
  Knight:
    permissions:
    - essentials.repair
    - essentials.repair.armor
    - essentials.repair.enchanted
    - essentials.repair.all
    - essentials.feed
    - essentials.kits.Knight
    - essentials.warp.Arena
    - essentials.book
    - essentials.book.author
    - essentials.book.title
    groups:
      groups: [Merchant]
    meta:
      prefix: '&4[Knight]'
      priority: '4'
  Noble:
    permissions:
    -
    -
    -
    -
    -
    -
    groups:
      groups: [Knight]
    meta:
      prefix: '&1[Noble]'
      priority: '1'
  Bishop:
    permissions:
    -
    -
    -
    -
    -
    -
    groups:
      groups: [Noble]
    meta:
      prefix: '&5[Bishop]'
      priority: '1'
  King:
    permissions:
    -
    -
    -
    -
    -
    groups:
      groups: [Bishop]
    meta:
      prefix: '&6[King]'
      priority: '1'
  Owner:
    permissions:
    - '*'
    groups:
      groups: [King]
    meta:
      prefix: '&6[Owner]'
      priority: '3'