duplicating page with JS in the

I want to duplicate a page.

when doing so I got this red message:

" Error parsing web-module ‘public/pages/tuowy.js’: Unexpected token (1:4) while parsing file: public/pages/tuowy.js
Loading the code for the gate1 page. To debug this code, open tuowy.js in Developer Tools."

what can be done in order to fix the problem.
I have work very hard to create the page and to use it as a template. in order to create 11 pages like this.
what is tuowy.js?

Thanks a lot for instructions

Masha