Error Script "Side view 2" line 76:No methodError occurred (Solved)

[Rankuerxlious]

it happened when i was eventing the battle actions.especially when there is a force action.
it worked normally when i tried it on a new project without this script.

The script name is RPG Tankentai Sideview Battle System Version 2.4 by RPG Tankentai
Translated by Kylock

when the error comes it says Error Script "Side view 2" line 76:No methodError occurred
undefiend method "set_text" for nil:NilClass

anyone can help?

edit : Solved the problem.