Fatal error: Uncaught Error: Class "mysqli" not found in /var/www/html/shared/config.php:20 Stack trace: #0 /var/www/html/shared/session_config.php(11): require_once() #1 /var/www/html/login.php(10): require_once('/var/www/html/s...') #2 {main} thrown in /var/www/html/shared/config.php on line 20