Buisson Theme Error

I bought and downloaded the Buisson theme. When I try to edit a page with Elementor, I get the following error code.

"Sorry, the content area was not found in your page.

You must call “the_content” function in the current template, in order for Elementor to work on this page."

I did find a YouTube video that directed me towards my cPanel, but I’m not able to find the exact file for this theme to edit.

Some help is appreciated.

Thank You