Fatal error: Uncaught Error: Call to undefined function add_action() in C:\xampp\htdocs\WAIT FOR DELETE\wp-content\plugins\jetpack\modules\infinite-scroll.php:51 Stack trace: #0 C:\xampp\htdocs\WAIT FOR DELETE\wp-content\plugins\jetpack\modules\infinite-scroll.php(39): Jetpack_Infinite_Scroll_Extras->__construct() #1 C:\xampp\htdocs\WAIT FOR DELETE\wp-content\plugins\jetpack\modules\infinite-scroll.php(231): Jetpack_Infinite_Scroll_Extras::instance() #2 {main} thrown in C:\xampp\htdocs\WAIT FOR DELETE\wp-content\plugins\jetpack\modules\infinite-scroll.php on line 51