Fatal error: Uncaught Error: Class "WP_REST_Posts_Controller" not found in /var/www/andovercg/staging/wp-includes/rest-api/endpoints/class-wp-rest-blocks-controller.php:20 Stack trace: #0 {main} thrown in /var/www/andovercg/staging/wp-includes/rest-api/endpoints/class-wp-rest-blocks-controller.php on line 20