The Content Area Was Not Found in Your Page

Hello,

I´m using Elementor, and after installing WPML multilingual CSM I´m getting the message "The Content Area Was Not Found in Your Page"

According to Elementor:
Manual solution
Add the_content function into the page template's code.
This is the line you need to add: <?php the_content(); ?>

Could you please let me know where to place this code?

Thanks!