Fatal error: Uncaught Error: Call to undefined function add_action() in /home/revitysolutions/Dev.revitysolutions.com/waqas/wp-includes/ms-default-filters.php:16
Stack trace:
#0 {main}
thrown in /home/revitysolutions/Dev.revitysolutions.com/waqas/wp-includes/ms-default-filters.php on line 16