Fatal error: Uncaught Error: Call to undefined function add_action() in C:\xampp\htdocs\WAIT FOR DELETE\wp-content\plugins\jetpack\class-jetpack-gallery-settings.php:18 Stack trace: #0 C:\xampp\htdocs\WAIT FOR DELETE\wp-content\plugins\jetpack\class-jetpack-gallery-settings.php(112): Jetpack_Gallery_Settings->__construct() #1 {main} thrown in C:\xampp\htdocs\WAIT FOR DELETE\wp-content\plugins\jetpack\class-jetpack-gallery-settings.php on line 18