Fatal error: Uncaught Error: Call to undefined function add_action() in /home/mncr/public_html/wp-content/mu-plugins_old/wpengine-common/dify-widget.php:21 Stack trace: #0 {main} thrown in /home/mncr/public_html/wp-content/mu-plugins_old/wpengine-common/dify-widget.php on line 21