Fatal error: Uncaught Error: Call to undefined function add_action() in C:\xampp\htdocs\WAIT FOR DELETE\wp-content\plugins\jetpack\modules\related-posts.php:42 Stack trace: #0 C:\xampp\htdocs\WAIT FOR DELETE\wp-content\plugins\jetpack\modules\related-posts.php(30): Jetpack_RelatedPosts_Module->__construct() #1 C:\xampp\htdocs\WAIT FOR DELETE\wp-content\plugins\jetpack\modules\related-posts.php(66): Jetpack_RelatedPosts_Module::instance() #2 {main} thrown in C:\xampp\htdocs\WAIT FOR DELETE\wp-content\plugins\jetpack\modules\related-posts.php on line 42