Why wont my PEX file work?

users:
  0ee0e2db-a4d2-4820-b44d-d0bb20795eb2:
    worlds:
      world:
        permissions:
        - none
    options:
      name: Danny5647
groups:
  a:
    default: true
    prefix: '&l&f A'
    permissions:
    - autorank.exclude
    - autorank.timeexclude
    - prison.mine.reset.broadcast
    - essentials.help
    - essentials.list
    - chestshop.shop.buy
    - chestshop.shop.sell
    - announcer.receiver
    - essentials.msg
    - essentials.spawn
    - essentials.mail.send
    - essentials.mail
    - prison.mine.protection.*
    - prison.mine.info.time
    - chestshop.shop.create
    - prison.mine.normal
    - jail.usercmd.jailstatus
    - paidranks.normal
    - magicsigns.heal.use
    - magicsigns.feed.use
    - payrank.list
    - warpsigns.use.A
    - warpsigns.use.Charlie
    - warpsigns.use.Dan
    - warpsigns.use.Danny
    - warpsigns.use.logs
    - warpsigns.use.Luke
    - warpsigns.use.Mines
    - warpsigns.use.MP
    - warpsigns.use.Parkour
    - warpsigns.use.Plots
    - warpsigns.use.Pvp
    - warpsigns.use.Spawn
    - warpsigns.use.Ewan
    - iconomy.access
    - iconomy.bank.access
    - iconomy.bank.deposit
    - iconomy.bank.join
    - iconomy.bank.leave
    - iconomy.bank.transfer
    - iconomy.bank.withdraw
    - iconomy.list
    - iconomy.payment
    - iconomy.rank
    - iconomy.holdings
    - iconomy.holdings.others
    - iconomy.help
    - iconomy.payment
    - iconomy.acounts
    - playerheads.canbehead
    - playerheads.alwaysbehead
    - hidestream.hidejoin
    - hidestream.hidekick
    - hidestream.hidedeath
    - hidestream.hidequit
    - kitmaster.kit.starter
    - kitmaster.kit.miner
    - iConomy.access
    permissions:
    - modifyworld.*
     rank: '100'
   b:
    prefix: '&l&7 B'
    permissions:
    - warpsigns.use.B
    inheritance:
    - a
    options:
      rank: '99'
   c:
    prefix: '&l&e C'
    permissions:
    - warpsigns.use.C
    inheritance:
    - b
    options:
      rank: '98'
   d:
    prefix: '&l&4 D'
    permissions:
    - warpsigns.use.D
    inheritance:
    - c
    options:
      rank: '97'
   e:
    prefix: '&l&a E'
    permissions:
    - warpsigns.use.E
    inheritance:
    - d
    options:
      rank: '96'
   f:
    prefix: '&l&b F'
    permissions:
    - warpsigns.use.F
    inheritance:
    - e
    options:
      rank: '95'
   g:
    prefix: '&l&5 G'
    permissions:
    - warpsigns.use.G
    inheritance:
    - f
    options:
      rank: '94'
   h:
    prefix: '&l&9 H'
    permissions:
    - warpsigns.use.H
    inheritance:
    - g
    options:
      rank: '93'
   i:
    prefix: '&l&6 I'
    permissions:
    - warpsigns.use.I
    inheritance:
    - h
    options:
      rank: '92'
   j:
    prefix: '&l&b J'
    permissions:
    - warpsigns.use.J
    inheritance:
    - i
    options:
      rank: '91'
   k:
    prefix: '&l&1 K'
    permissions:
    - warpsigns.use.k
    inheritance:
    - j
    options:
      rank: '90'
   l:
    prefix: '&l&c L'
    permissions:
    - warpsigns.use.L
    inheritance:
    - k
    options:
      rank: '89'
   m:
    prefix: '&l&e M'
    permissions:
    - warpsigns.use.m
    inheritance:
    - l
    options:
      rank: '87'
   n:
    prefix: '&l&3 N'
    permissions:
    - warpsigns.use.n
    inheritance:
    - m
    options:
      rank: '86'
   o:
    prefix: '&l&2 O'
    permissions:
    - warpsigns.use.o
    inheritance:
    - n
    options:
      rank: '85'
   p:
    prefix: '&l&0 P'
    permissions:
    - warpsigns.use.P
    inheritance:
    - o
    options:
      rank: '84'
  q:
    prefix: '&l&6 Q'
    permissions:
    - warpsigns.use.Q
    inheritance:
    - p
    options:
      rank: '83'
  r:
    prefix: '&l&a R'
    permissions:
    - warpsigns.use.P
    inheritance:
    - q
    options:
      rank: '82'
 s:
    prefix: '&l&5 S'
    permissions:
    - warpsigns.use.S
    inheritance:
    - r
    options:
      rank: '81'
 t:
    prefix: '&l&9 T'
    permissions:
    - warpsigns.use.T
    inheritance:
    - s
    options:
      rank: '80'
 u:
    prefix: '&l&8 U'
    permissions:
    - warpsigns.use.U
    inheritance:
    - t
    options:
      rank: '79'
 v:
    prefix: '&l&e V'
    permissions:
    - warpsigns.use.V
    inheritance:
    - u
    options:
      rank: '78'
 w:
    prefix: '&l&b W'
    permissions:
    - warpsigns.use.W
    inheritance:
    - v
    options:
      rank: '77'
 x:
    prefix: '&l&d X'
    permissions:
    - warpsigns.use.X
    inheritance:
    - w
    options:
      rank: '76'
 y:
    prefix: '&l&4 Y'
    permissions:
    - warpsigns.use.Y
    inheritance:
    - x
    options:
      rank: '75'
 z:
    prefix: '&l&1 Z'
    permissions:
    - warpsigns.use.Z
    inheritance:
    - x
    options:
      rank: '74'
 free:
    prefix: '&l&8&kkk &4Free &8&kkk'
    permissions:
    - warpsigns.use.Free
    inheritance:
    - z
    options:
      rank: '73'
 Helper:
    prefix: '&4(&5Helper&9)'
    permissions:
    - essentials.kick
    - essentials.kick.exempt
    - essentials.kick.notify
    - essentials.mute
    - essentials.mute.exempt
    - essentials.mute.notify
    - essentials.togglejail
    - essentials.jail.exempt
    - essentials.signs.color
    - essentials.fly
    - essentials.suicide
    - essentials.clearinventory
    - kitmaster.kit.coal
    - kitmaster.kit.iron
    - kitmaster.kit.gold
    - kitmaster.kit.redstone
    - kitmaster.kit.diamond
    - kitmaster.kit.emerald
    - kitmaster.kit.lapis
    - echopet.pet.*
    - - echopet.pet.type.wither
    - - echopet.pet.type.enderdragon
    - essentials.nick
    - essentials.nick.color
    - essentials.nick.format
    - essentials.feed
    - essentials.heal
    - essentials.hat
    - essentials.repair
    - essentials.repair.all
    - essentials.enderchest
    - essentials.enderchest.others
    - essentials.tpaccept
    - essentials.tpa
    - essentials.tpdeny
    - essentials.msg.color
    - essentials.workbench
    - essentials.invsee.preventmodify
    inheritance:
    - free
    options:
      rank: '8'
 Head_Helper:
    prefix: '&4(&5Head Helper&9)'
    permissions:
    inheritance:
    - Helper
    options:
      rank: '7'
 Mod:
    prefix: '&4(&9Mod&9)'
    permissions:
    - essentials.tempban
    - essentials.tempban.exempt
    - essentials.ban.notify
    - essentials.nick.magic
    - essentials.socialspy
    - essentials.enderchest.modify
    - essentials.tp
    - essentials.getpos.others
    inheritance:
    - Helper
    options:
      rank: '6'
 Head_Mod:
    prefix: '&4(&5Head Mod&9)'
    permissions:
    inheritance:
    - Mod
    options:
      rank: '5'
 Admin:
    prefix: '&4(&2Admin&6)'
    permissions:
    - essentials.gamemode
    - essentials.time
    - essentials.time.set
    - essentials.afk
    - essentials.more
    - essentials.vanish
    - essentials.vanish.see
    - essentials.vanish.interact
    - essentials.invsee
    - iConomy.admin.grant
    inheritance:
    - Mod
    options:
      rank: '4'
 Head_Admin:
    prefix: '&4(&5Head Admin&9)'
    permissions:
    inheritance:
    - Admin
    options:
      rank: '3'
 Co-Owner:
    prefix: '&l&2 Co-Owner'
    permissions:
    - '*'
    - - bukkit.stop
    - - echopet.pet.type.wither
    - - echopet.pet.type.enderdragon
    inheritance:
    options:
      rank: '2'
 Owner:
    prefix: '&l&3 Owner'
    permissions:
    - '*'
    inheritance:
    options:
      rank: '1'