Warning: mysqli_connect(): php_network_getaddresses: getaddrinfo for {localhost} failed: Name or service not known in /var/www/mirza_mirzatest_erforias_cam/config.php on line 9

Fatal error: Uncaught mysqli_sql_exception: php_network_getaddresses: getaddrinfo for {localhost} failed: Name or service not known in /var/www/mirza_mirzatest_erforias_cam/config.php:9 Stack trace: #0 /var/www/mirza_mirzatest_erforias_cam/config.php(9): mysqli_connect() #1 /var/www/mirza_mirzatest_erforias_cam/index.php(7): require_once('...') #2 {main} thrown in /var/www/mirza_mirzatest_erforias_cam/config.php on line 9