We use php class ZipArchive in CityTours theme.

Please check https://www.php.net/manual/en/class.ziparchive.php

Please tell it to hosting server provider.

Best Regards,

We have talked to them, there are saying for adding codes for GZip which your developer can do.

Hi,

Please contact your hosting server provider to enable gzip in your php server.

Best Regards,

While importing a demo, GZip is required that's why we are unable to import and start working.