ok lets simplify … what file in your theme when instaled in my client web to command : GET https://new.tanamanmart.com/wp-content/uploads/2019/08/style-1565666833.css ?

So i able to change in main site to command : GET https://tanamanmart.com/wp-content/uploads/2019/08/style-1565666833.css not from GET https://new.tanamanmart.com/wp-content/uploads/2019/08/style-1565666833.css

so its no error anymore…in my client main site if old site (new.tanamanmart.com) deleted…