[Error] My game crashes whenever I gain exp.

[amberstar2604]

Please help my game just crashes whenever I level up or gain exp but I didn't change those parts of the scripts.

Here is the error message.

[Pokémon Essentials version 18.1.dev]
Exception: NoMethodError
Message: undefined method `+' for nil:NilClass

Backtrace:
Move_Usage:341:in `pbRecordDamageLost'
Battler_UseMove:697:in `pbProcessMoveHit'
Battler_UseMove:692:in `each'
Battler_UseMove:692:in `pbProcessMoveHit'
Battler_UseMove:431:in `pbUseMove'
Battler_UseMove:429:in `each'
Battler_UseMove:429:in `pbUseMove'
Battler_UseMove:60:in `pbProcessTurn'
Battler_UseMove:59:in `logonerr'
Battler_UseMove:59:in `pbProcessTurn'

 

[StCooler]

  def pbRecordDamageLost(user,target)
    damage = target.damageState.hpLost
    target.yamaskhp+= damage # Line 341

So, I looked at the code, and the error says that either target.yamaskhp or damage is nil. target.yamaskhp should always be an integer (default value is 0).
You say you didn't change those parts of the script; did you change anything that alters target.damageState or target.yamaskhp?

 

[amberstar2604]

I added the lavender town ghosts script which made it so I couldn't attack a non ghost so the game crashed. I removed the script and it works now.