Warning: mysqli_connect(): php_network_getaddresses: getaddrinfo for mysql failed: Temporary failure in name resolution in /var/www/html/travsupsys.cz/ceska_export/exportcp.php on line 21

Fatal error: Uncaught mysqli_sql_exception: php_network_getaddresses: getaddrinfo for mysql failed: Temporary failure in name resolution in /var/www/html/travsupsys.cz/ceska_export/exportcp.php:21 Stack trace: #0 /var/www/html/travsupsys.cz/ceska_export/exportcp.php(21): mysqli_connect() #1 {main} thrown in /var/www/html/travsupsys.cz/ceska_export/exportcp.php on line 21