Problem when entering to wild battle

?Alola!
This is my first post here, and I have an error when I pass al the game data at least most to a new Essentials (16,2) and the most part of things are perfect, but when I entering to a Wild Pok?mon Battle, I've got this error:

---------------------------
Pokemon Essentials Esp v16.2
---------------------------
Script 'PScreen_Bag' line 726: NoMethodError occurred.

undefined method `length' for nil:NilClass
---------------------------
Aceptar
---------------------------

Click to expand...

Sorry for my bad English, I talk spanish

Hi, see how it says 'PScreen_Bag' and 'line 726'? That's the biggest hint to how to solve this. If you go to the script section (F11) and go to the script named 'PScreen_Bag', look at the 726th line. If you could send a screenshot of it or something, maybe I could help?


Hola, ?ves c?mo dice 'PScreen_Bag' y 'l?nea 726'? Esa es la mayor pista de c?mo resolver esto. Si va a la secci?n de guiones (F11) y va al gui?n llamado 'PScreen_Bag', mire a linea 726. Si pudieras enviar una captura de pantalla o algo as?, ?podr?a ayudarte?

Here is the code: