It says a internal error has occured here iss my Yaml file

groups:
Owner:
default: false
permissions:
- '*'
- catacombs.*
inheritance:
- member
info:
prefix: '&b[Owner] &f'
build: true
suffix: ''
Member:
default: true
permissions:
- essentials.balance
- essentials.help
- essentials.helpop
- essentials.home
- essentials.list
- essentials.mail
- essentials.mail.send
- essentials.msg
- essentials.sethome
- essentials.signs.use.warp
- essentials.spawn
- essentials.suicide
- essentials.tpa
- essentials.tpaccept
- essentials.tpahere
- essentials.tpdeny
- essentials.warp
- essentials.warp.*
- essentials.pl
- heroes.choose.*
- heroes.bind.*
- help
- players
inheritance:
- g:bukkit_default
info:
prefix: '&e[Adventurer] &f'
build: true
suffix: ''
Archer:
default: false
permissions:
- essentials.balance
- essentials.help
- essentials.helpop
- essentials.home
- essentials.list
- essentials.mail
- essentials.mail.send
- essentials.msg
- essentials.sethome
- essentials.signs.use.warp
- essentials.spawn
- essentials.suicide
- essentials.tpa
- essentials.tpaccept
- essentials.tpahere
- essentials.tpdeny
- essentials.warp
- essentials.warp.*
- essentials.pl
- heroes.choose.*
- help
- players
inheritance:
- g:bukkit_default
info:
prefix: '&a[Archer]&f'
build: true
suffix: ''
Mage:
default: false
permissions:
- essentials.balance
- essentials.help
- essentials.helpop
- essentials.home
- essentials.list
- essentials.mail
- essentials.mail.send
- essentials.msg
- essentials.sethome
- essentials.signs.use.warp
- essentials.spawn
- essentials.suicide
- essentials.tpa
- essentials.tpaccept
- essentials.tpahere
- essentials.tpdeny
- essentials.warp
- essentials.warp.*
- essentials.pl
- heroes.choose.*
- help
- players
inheritance:
- g:bukkit_default
info:
prefix: '&4[Mage] &f'
Warrior:
default: false
permissions:
- essentials.balance
- essentials.help
- essentials.helpop
- essentials.home
- essentials.list
- essentials.mail
- essentials.mail.send
- essentials.msg
- essentials.sethome
- essentials.signs.use.warp
- essentials.spawn
- essentials.suicide
- essentials.tpa
- essentials.tpaccept
- essentials.tpahere
- essentials.tpdeny
- essentials.warp
- essentials.warp.*
- essentials.pl
- heroes.choose.*
- help
- players
inheritance:
- g:bukkit_default
info:
prefix: '&4[Warrior]&f'
build: true
suffix: ''
Cleric:
default: false
permissions:
- essentials.balance
- essentials.help
- essentials.helpop
- essentials.home
- essentials.list
- essentials.mail
- essentials.mail.send
- essentials.msg
- essentials.sethome
- essentials.signs.use.warp
- essentials.spawn
- essentials.suicide
- essentials.tpa
- essentials.tpaccept
- essentials.tpahere
- essentials.tpdeny
- essentials.warp
- essentials.warp.*
- essentials.pl
- heroes.choose.*
- help
- players
inheritance:
- g:bukkit_default
info:
prefix: '&8[Cleric]&f'
build: true
suffix: ''
Co-Owner:
default: false
permissions:
- '*'
inheritance:
- member
info:
prefix: '&b[Co-Owner] &f'
build: true
suffix: ''
Premod:
default: false
permissions:
- essentials.jails
- essentials.kick
- essentials.mute
- essentials.togglejail
- essentials.togglejail.offline
- mobdisguise.*
- heroes.choose.*
- heroes.bind.*
inheritance:
- member
info:
prefix: '&b[Protector]&f'
build: true
suffix: ''
Rogue:
default: false
permissions:
- essentials.balance
- essentials.help
- essentials.helpop
- essentials.home
- essentials.list
- essentials.mail
- essentials.mail.send
- essentials.msg
- essentials.sethome
- essentials.signs.use.warp
- essentials.spawn
- essentials.suicide
- essentials.tpa
- essentials.tpaccept
- essentials.tpahere
- essentials.tpdeny
- essentials.warp
- essentials.warp.*
- essentials.pl
inheritance:
- member
- g:towny_builder
info:
prefix: '&3[Rogue] &f'
build: true
suffix: ''
Moderator:
default: false
permissions:
- essentials.invsee
- essentials.jails
- essentials.kick
- essentials.mute
- essentials.tempban
- essentials.tempban.offline
- essentials.togglejail
- essentials.togglejail.offline
- g:bukkit_moderator
- g:essentials_moderator
- g:towny_moderator
- mobdisguise.*
inheritance:
- member
- premod
info:
prefix: '&b[Moderator] &f'
build: true
suffix: ''
Headadmin:
default: false
permissions:
- '*'
inheritance:
- member
info:
prefix: '&b[Head-Admin] &f'
build: true
suffix: ''
Admin:
default: false
permissions:
- '*'
inheritance:
- member
info:
prefix: '&b[Admin] &f'
build: true
suffix: ''