Urgent: Persistent PHP Warning Messages in Customizer

Subject:

I am currently facing an issue when trying to access the Customizer on the front end of my WordPress website. I am receiving the following PHP warning messages at the top of the page:

Warning: Attempt to read property "post_status" on null in /home/u339854896/domains/ownloveinstructor.com/public_html/wp-admin/includes/template.php on line 2298
[...]

Here are the steps I’ve taken to troubleshoot the issue:

1. Deactivated ALL plugins.
2. Switched to a default theme.
3. Reinstalled the latest version of WordPress.
4. I’ve also checked and resolved forum queries, deleted unused pages from the menu, and contacted both the theme developer and Hostinger support. However, the issue persists.

The warnings seem to originate from the template.php file, and despite these efforts, I have been unable to resolve the problem.

I am reaching out to you for assistance in resolving this matter promptly. Your expertise in diagnosing and resolving such issues is highly appreciated.

If you need any further information or access credentials, please let me know. I am eager to have this matter resolved as soon as possible to ensure the smooth operation of my website.

Thank you for your prompt attention to this matter.

The page I need help with: [log in to see the link]