Warning: mysqli_connect(): php_network_getaddresses: getaddrinfo for locahost failed: Name or service not known in /var/www/html/results.php on line 4

Fatal error: Uncaught mysqli_sql_exception: php_network_getaddresses: getaddrinfo for locahost failed: Name or service not known in /var/www/html/results.php:4 Stack trace: #0 /var/www/html/results.php(4): mysqli_connect('locahost', 'aarambh_online', Object(SensitiveParameterValue), 'root') #1 {main} thrown in /var/www/html/results.php on line 4