Fatal error: Uncaught Error: Call to undefined function add_action() in C:\xampp\htdocs\WAIT FOR DELETE\wp-content\plugins\jetpack\modules\custom-css\custom-css-4.7.php:23 Stack trace: #0 C:\xampp\htdocs\WAIT FOR DELETE\wp-content\plugins\jetpack\modules\custom-css\custom-css-4.7.php(1177): Jetpack_Custom_CSS_Enhancements::add_hooks() #1 {main} thrown in C:\xampp\htdocs\WAIT FOR DELETE\wp-content\plugins\jetpack\modules\custom-css\custom-css-4.7.php on line 23