[Scripting Question] [Pokemon Essentials v19.1] Vertical Fight Menu Wrapping Issues

[zedcoeur]

Hello, everyone. I'm currently dealing with a situation where my Fight menu for battles doesn't properly wrap back to the top-most when I input DOWN at the bottom-most move.

This is the code I'm currently using:

if Input.trigger?(Input::UP)
        cw.index -= 1
        if cw.index<Pokemon::MAX_MOVES && cw.index>=battler.pokemon.numMoves
          cw.index = battler.pokemon.numMoves-1
        end
        cw.index = 0 if cw.index>=Pokemon::MAX_MOVES
        cw.index = battler.pokemon.numMoves-1 if cw.index<0
      elsif Input.trigger?(Input::DOWN)
        cw.index += 1
        cw.index = 0 if cw.index<Pokemon::MAX_MOVES && cw.index>=battler.pokemon.numMoves
        cw.index = 0 if cw.index==Pokemon::MAX_MOVES
        cw.index = Pokemon::MAX_MOVES if cw.index<0
      end

and this is the error I'm getting:

[Pokémon Essentials version 19.1]
[Generation 8 Project v1.0.1]

Exception: NoMethodError
Message: undefined method `total_pp' for nil:NilClass

Backtrace:
388:SU SceneMenus:368:in `refreshMoveData'
388:SU SceneMenus:351:in `refreshSelection'
388:SU SceneMenus:394:in `refresh'
388:SU SceneMenus:64:in `index='
390:SU SceneCommands:104:in `block in pbFightMenu'
390:SU SceneCommands:78:in `loop'
390:SU SceneCommands:78:in `pbFightMenu'
182:Battle_Phase_Command:67:in `pbFightMenu'
182:Battle_Phase_Command:215:in `block (2 levels) in pbCommandPhaseLoop'
182:Battle_Phase_Command:206:in `loop'