Hi everybody,
After the site is upgraded to Wordpress version 5.3.2, two warning lines appear on each page and the pages are no longer loaded.
Warning: preg_match() expects parameter 2 to be string, array given in /home/apima917/public_html/wp-includes/class-wp-block-parser.php on line 417
Warning: strlen() expects parameter 1 to be string, array given in /home/apima917/public_html/wp-includes/class-wp-block-parser.php on line 489
I deactivated and reactivated all the plugins (all ok) and I updated the theme to version 5.7, but it didn’t help.
By activating any of the Wordpress themes everything works, but obviously I lose the graphic functionality of the LMS theme and some pages are unusable.
I would also add that I have not made any customizations to the theme.
How can I solve it?
Thank you very much