XF 2.1 Can't upgrade to 2.1.12

[knobby]

I have a message that v2.1.12 is available, but when I click the upgrade button I get the following error:

"The following issue was found when determining if a one-click upgrade is possible: ZipArchive class does not exist."

Can anyone tell me what this means and what I need to do to eneable the upgrade?

Thanks

 

[duderuud]

Install the module php-zip or ask your hoster to do that.

 

[knobby]

Thanks very much.