Fatal error: Uncaught Error: Class "WP_REST_Controller" not found in /mnt/home/ammarman/uniquesolutionpk.com/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php:17 Stack trace: #0 /mnt/home/ammarman/uniquesolutionpk.com/wp-settings.php(299): require() #1 /mnt/home/ammarman/uniquesolutionpk.com/wp-config.php(114): require_once('/mnt/home/ammar...') #2 /mnt/home/ammarman/uniquesolutionpk.com/wp-load.php(50): require_once('/mnt/home/ammar...') #3 /mnt/home/ammarman/uniquesolutionpk.com/wp-blog-header.php(13): require_once('/mnt/home/ammar...') #4 /mnt/home/ammarman/uniquesolutionpk.com/index.php(17): require('/mnt/home/ammar...') #5 {main} thrown in /mnt/home/ammarman/uniquesolutionpk.com/wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php on line 17