Warning: mysqli_connect(): php_network_getaddresses: getaddrinfo for db failed: Name or service not known in /var/www/html/projectfocus.php on line 110

Fatal error: Uncaught mysqli_sql_exception: php_network_getaddresses: getaddrinfo for db failed: Name or service not known in /var/www/html/projectfocus.php:110 Stack trace: #0 /var/www/html/projectfocus.php(110): mysqli_connect('db', 'kadmin', Object(SensitiveParameterValue), 'ajewww_db') #1 {main} thrown in /var/www/html/projectfocus.php on line 110