Fatal error: Call to undefined function mb_detect_order()

Hello,

Please check this topic: https://forum.tagdiv.com/topic/fatal-erorr-when-i-check-the-widged-and-costumizer-pages-on-wp-dashboard/

Thank you!

Hi,

Did you maybe made any modifications to WordPress files, mainly the functions.php file. Seems the error points to it “public_html/wp-includes/functions.php”. Remove the modifications if you made any, or if you entered custom code in it remove it as well.

Also check if the theme requirements are met fully, check if the required PHP extensions are active
– https://forum.tagdiv.com/requirements-for-newspaper/
Contact your hosting provider for assistance in activating the extensions if needed, also mention the error to them, maybe they have an idea about the problem.