Warning: mysqli::__construct(): php_network_getaddresses: getaddrinfo for pro-mytenge-db failed: Temporary failure in name resolution in /var/www/html/connect.php on line 3

Fatal error: Uncaught mysqli_sql_exception: php_network_getaddresses: getaddrinfo for pro-mytenge-db failed: Temporary failure in name resolution in /var/www/html/connect.php:3 Stack trace: #0 /var/www/html/connect.php(3): mysqli->__construct('pro-mytenge-db:...', 'mytenge1_db', Object(SensitiveParameterValue)) #1 /var/www/html/core.php(11): require('/var/www/html/c...') #2 /var/www/html/index.php(23): require('/var/www/html/c...') #3 {main} thrown in /var/www/html/connect.php on line 3