Error with download link on lightbox displays

Select a type not being –none– in Table VI-C1

Thanks Jacob ,
the error message is gone
Now, after clicking the link, the image opens in a new window
As you can set it to save the image on your computer?

Select the zip-file option in Table VI-C1. There is no way to force the browser to do the download dialog box for a .jpg file.

I had already tried
but I get the error 8
“Unable to create zip archive”

The class ‘ZipArchive’ does not exist.

Ask your hosting provider to add the zip library to your php configuration (PHP 5 >= 5.2.0, PECL zip >= 1.1.0), see https://nl3.php.net/manual/en/class.ziparchive.php