Hello,
Please deactivate all the third-party plugins and activate only theme-required plugins on the site and then check the issue. I am sure your issue will be solved. Then, activate the third-party plugins one by one and check which plugin is creating the issue for you.
Otherwise, if the issue still exists, then keep the third-party plugins deactivated and let me know I will check and give you a possible solution.
Additionally, please follow this guide and configure the options:
https://elementor.com/help/the-content-area-was-not-found-error/
Best Regards,