Fatal error: Uncaught Error: Call to undefined function add_action() in C:\web_server\htdocs\home\wp-includes\build\pages\options-connectors\page-wp-admin.php:301 Stack trace: #0 {main} thrown in C:\web_server\htdocs\home\wp-includes\build\pages\options-connectors\page-wp-admin.php on line 301