Only posts are having issues after the update

Hi. Ever since I’ve updated to WordPress 5.5.3, I have been facing an issue of some errors near the footer that appear sometimes and sometimes they don’t. I’ve contacted a lot of WordPress guys and everyone is asking me to update WordPress which I don’t want. Can someone suggest to me if the WordPress version is actually causing the issue?

Error: headers already sent by (output started at /some/file.php:12) in /some/file.php on line 23

The page that is having issues: [redacted, redundant]

If I should update WordPress, I’m afraid the layout will get disturbed like I’ve faced with one of the sites a few weeks ago.

Kindly suggest. Thank you

Emily

• This topic was modified 4 years, 3 months ago by Steven Stern (sterndata).
• This topic was modified 4 years, 3 months ago by Steven Stern (sterndata).

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