Mysql Driver Not Installed

On shared hosting. My piwik install has been running successfully for over a year. Hiwever today i tried to log in and i received the following error:

error occurred

Can not connect to the database:

The mysql driver is not currently installed

This may be a temporary issue, try refreshing the page. If the trouble persists please contact your Piwik administrator

What could be the cause of this? How can I negin to troubleshoot? There is very little info on this.

On the same shared hosting account I have Joomla and Wordpress installed with no issues.

Maybe you don’t have some library installed, e.g. PDO MySQL driver in PHP?

Thanks but no that’s not it. I have everything required and installed. Such a strange issue.

Your webhost changed something and broke your setup. please contact them.