Redirect loop on posts

Hi!
I have a problem with the posts. Yesterday I was migrating from the local version of the website to the production version and everything was fine. After some time, without my intervention (probably), the website started showing redirect loops only on posts. I figured it might be a matter of automatic wordpress update or some plugin. Have you ever encountered such a problem?

I will add that the local version has also stopped working properly

Thank you in advance for your help

• This topic was modified 5 years by Destrudo.

EDIT:

I have this error from error.log:

[Wed Nov 25 09:19:35.190856 2020] [php7:error] [pid 18460:tid 1848] [client ::1:62743] PHP Fatal error: Uncaught Error: Class 'td_util' not found in C:\\xamppx\\htdocs\\d-stage\\wp-content\\themes\\Newsmag\\functions.php:52\nStack trace:\n#0 C:\\xamppx\\htdocs\\d-stage\\wp-includes\\class-wp-hook.php(287): {closure}(false, Object(WP_Query))\n#1 C:\\xamppx\\htdocs\\d-stage\\wp-includes\\plugin.php(206): WP_Hook->apply_filters(false, Array)\n#2 C:\\xamppx\\htdocs\\d-stage\\wp-includes\\class-wp.php(658): apply_filters('pre_handle_404', false, Object(WP_Query))\n#3 C:\\xamppx\\htdocs\\d-stage\\wp-includes\\class-wp.php(748): WP->handle_404()\n#4 C:\\xamppx\\htdocs\\d-stage\\wp-includes\\functions.php(1285): WP->main('')\n#5 C:\\xamppx\\htdocs\\d-stage\\wp-blog-header.php(16): wp()\n#6 C:\\xamppx\\htdocs\\d-stage\\index.php(17): require('C:\\\\xamppx\\\\htdoc...')\n#7 {main}\n thrown in C:\\xamppx\\htdocs\\d-stage\\wp-content\\themes\\Newsmag\\functions.php on line 52

• This reply was modified 5 years by Destrudo.

resolved – there was a problem with the database