Fatal error: Uncaught Error: Call to undefined function add_action() in C:\Apache24\htdocs\ladol\wp-content\plugins\ml-slider\metagallery\resources\admin\overrides.php:18 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\ladol\wp-content\plugins\ml-slider\metagallery\resources\admin\overrides.php on line 18