Ironing out new Abilities

[Nova Ozuka]

I made a couple of new abilities that Aurorus gets, but they're not quite doing what they're supposed to. The first is Freeze Body, an Ice-Type version of Flame Body.

Battle::AbilityEffects::OnBeingHit.add(:FREEZEBODY,
  proc { |ability, user, target, move, battle|
    next if !move.pbContactMove?(user)
    next if user.frozen? || battle.pbRandom(100) >= 30
    battle.pbShowAbilitySplash(target)
    if user.pbCanFreeze?(target, Battle::Scene::USE_ABILITY_SPLASH) &&
       user.affectedByContactEffect?(Battle::Scene::USE_ABILITY_SPLASH)
      msg = nil
      if !Battle::Scene::USE_ABILITY_SPLASH
        msg = _INTL("{1}'s {2} froze {3}!", target.pbThis, target.abilityName, user.pbThis(true))
      end
      user.pbFreeze(target)
    end
    battle.pbHideAbilitySplash(target)
  }
)

Originally, I had the freeze line as user.pbFreeze(target,msg), but the game didn't like that, so I got rid of the msg and ended up with this:
[Pokémon Essentials version 21.1]
[v21.1 Hotfixes 1.0.9]

Exception: NoMethodError
Message: undefined method `empty?' for #<Battle::Battler>

Backtrace:
Battler_Statuses:232:in `pbInflictStatus'
[Generation 9 Pack] [003] Weather and Status.rb:429:in `pbInflictStatus'
[Deluxe Battle Kit] [001] Midbattle Overwrites.rb:597:in `pbInflictStatus'
Battler_Statuses:396:in `pbFreeze'
Battle_AbilityEffects:1846:in `block in <main>'
Event_Handlers:195:in `trigger'
Battle_AbilityEffects:219:in `triggerOnBeingHit'
Battler_UseMoveTriggerEffects:10:in `pbEffectsOnMakingHit'
[v21.1 Hotfixes] Battle bug fixes.rb:149:in `pbEffectsOnMakingHit'
[Generation 9 Pack] [002] Battle_Battler.rb:487:in `pbEffectsOnMakingHit'



The next one is a Primordial Weather ability that doesn't do much, or at least I haven't made it do much yet. It starts a weather labled :Snowstorm. The problem isn't really with the ability itself. The issue I'm having is trying to make Aurora Veil work while it's active.

  class Battle::Move::StartWeakenDamageAgainstUserSideIfHail < Battle::Move
  def canSnatch?; return true; end

  def pbMoveFailed?(user, targets)
    if user.effectiveWeather != :Hail
      return false if user.effectiveWeather = :Snowstorm
      @battle.pbDisplay(_INTL("But it failed!"))
      return true
    end
    if user.pbOwnSide.effects[PBEffects::AuroraVeil] > 0
      @battle.pbDisplay(_INTL("But it failed!"))
      return true
    end
    return false
  end

  def pbEffectGeneral(user)
    user.pbOwnSide.effects[PBEffects::AuroraVeil] = 5
    user.pbOwnSide.effects[PBEffects::AuroraVeil] = 8 if user.hasActiveItem?(:LIGHTCLAY)
    @battle.pbDisplay(_INTL("{1} made {2} stronger against physical and special moves!",
                            @name, user.pbTeam(true)))
  end
end

Genuinely, I might be missing something small here. I've tried everything I could think of, but this one just doesn't want to work except with :Hail.