Fatal error: Uncaught Error: Class 'WP_REST_Controller' not found in /Applications/XAMPP/xamppfiles/htdocs/web_abura888/wp-content/plugins/nextgen-gallery/src/REST/Admin/Block.php:8 Stack trace: #0 /Applications/XAMPP/xamppfiles/htdocs/web_abura888/wp-content/plugins/nextgen-gallery/nggallery.php(222): require() #1 [internal function]: C_NextGEN_Bootstrap->autoloader('Imagely\\NGG\\RES...') #2 /Applications/XAMPP/xamppfiles/htdocs/web_abura888/wp-content/plugins/nextgen-gallery/src/REST/Manager.php(11): spl_autoload_call('Imagely\\NGG\\RES...') #3 /Applications/XAMPP/xamppfiles/htdocs/web_abura888/wp-includes/plugin.php(524): Imagely\NGG\REST\Manager::rest_api_init(Object(WP_REST_Server)) #4 /Applications/XAMPP/xamppfiles/htdocs/web_abura888/wp-includes/rest-api.php(294): do_action('rest_api_init', Object(WP_REST_Server)) #5 /Applications/XAMPP/xamppfiles/htdocs/web_abura888/wp-includes/rest-api.php(144): rest_get_server() #6 /Applications/XAMPP/xamppfiles/htdocs/web_abura888/wp-includes/plugin.php(600): rest_api_loaded(O in /Applications/XAMPP/xamppfiles/htdocs/web_abura888/wp-content/plugins/nextgen-gallery/src/REST/Admin/Block.php on line 8