Fatal error: Uncaught Error: Call to undefined function add_action() in /home/microm13/public_html/beta/techcity/wp-admin/includes/class-wp-site-icon.php:76 Stack trace: #0 /home/microm13/public_html/beta/techcity/wp-admin/includes/class-wp-site-icon.php(247): WP_Site_Icon->__construct() #1 {main} thrown in /home/microm13/public_html/beta/techcity/wp-admin/includes/class-wp-site-icon.php on line 76