Message error after catching rainbow pokemon

[microwavexxx]

So, I just started playing Rejuvenation and keep running into the rainbow Pokémon, but every time it pops up with this error message. Does anyone know why this is happening?

 

[Pokemon Rejuvenation 13.5.0]
Exception: NoMethodError
Message: undefined method `+' for nil:NilClass
Rejuv/RejuvCustomScripts:1038:in `incrementBlackPrisms'
Rejuv/RejuvCustomScripts:1101:in `onCatch'
Battle:192:in `pbThrowPokeBall'
ItemEffects:3573:in `block (3 levels) in <main>'
PBEvent:129:in `trigger'
Items:302:in `triggerUseInBattle'
Rejuv/Achievements:339:in `triggerUseInBattle'
Battle:1909:in `pbRegisterItem'
Battle:3673:in `block (2 levels) in pbCommandPhase'
Battle:3609:in `loop'
Battle:3609:in `block in pbCommandPhase'
Battle:3599:in `each'
Battle:3599:in `pbCommandPhase'
Battle:3517:in `block (2 levels) in pbStartBattle'
PBDebug:4:in `logonerr'
Battle:3516:in `block in pbStartBattle'
Battle:3511:in `loop'
Battle:3511:in `pbStartBattle'
Field:1200:in `block (2 levels) in pbWildBattle'
Field:696:in `pbSceneStandby'
Field:1199:in `block in pbWildBattle'
Field:1047:in `pbBattleAnimation'
Field:1198:in `pbWildBattle'
Field:1753:in `pbBattleOnStepTaken'
Field:1774:in `pbOnStepTaken'