Error running script: Too many parameters passed to SpawnZed function - 1 passed, but only 0 expected

Also for some reason when I first start the game the word Do Attack appears whenever I have any SpawnZeds in any of the rooms.

It's written in After Entering The Room For The First Time as the function: SpawnZed (this)

The actual SpawnZed function is as follows:

  game.crittercount = game.crittercount + 1
}
else {
  game.crittercount = 1
}
create ("critter" + game.crittercount)
obj = GetObject("critter" + game.crittercount)
obj.parent = room
obj.displayverbs = Split("Look at;Attack;Shoot", ";")
obj.dead = false
obj.changedhitpoints => {
  if (this.hitpoints < 1) {
    msg ("It is dead!")
    this.dead = true
  }
}
names = Split("twitchy;feral;wild-eyed;screechng;filthy;hungry", ";")
obj.alias = StringListItem(names, game.crittercount % ListCount(names)) + " zombie"
obj.listalias = CapFirst(obj.alias)
obj.look = ProcessText("A " + obj.alias + ", {random:covered in maggots:missing an arm:one eye hanging out}.")
obj.hitpoints = 10
obj.damage = 3
obj.attack = 0
obj.defence = 0
obj.armour = 0
obj.critdesc = "A well-placed blow by #attacker# sends you reeling (#hits# hits)."
obj.attackdesc = "#Attacker# has hit you (#hits# hits)."
obj.missdesc = "#Attacker# misses you."
obj.selectweapon => {
  if (RandomChance(50)) {
    obj.weaponcount = GetRandomInt(0, 100)
    obj.selectweapon => {
      names = Split("zedweapons;zedweapons;zedweapons", ";")
      name = StringListItem(names, this.weaponcount % ListCount(names))
      this.weapon = GetObject(name)
      this.weaponcount = this.weaponcount + 1
    }
  }
}
obj.searchscript => {
  money = GetRandomInt(1, 50)
  msg ("You find " + DisplayMoney(money) + ".")
  player.money = player.money + money
  if (randomChance(10)) {
    o = PickOneChild(treasureroom)
    msg ("You also find " + GetDisplayName(o) + ".")
    CloneObjectAndMoveHere (o)
  }
}
obj.changedhitpoints => {
  if (this.hitpoints < 1) {
    msg ("It is dead!")
    this.dead = true
    this.displayverbs = Split("Look at;Loot;Harvest", ";")
  }
}
if (not ListContains(ScopeReachable(), player)) {
  msg ("random:crying;stumbles;falls down.")
}
else if (ListContains(ScopeReachable(), player)) {
  msg ("DoAttack")
}

You need to add the parameter room to that function.