I had a Fabrik project that I wanted so show someone and when I got there I saw this message.
0 Unable to connect to the Database: This driver is unsupported in PHP 7, please use the MySQLi or PDO MySQL driver instead.
My Joomla was version Joomla! 3.8.6. I had recently upgraded the server to PHP 7, so I found what broke it. I found this article to get me started.
I needed my Joomla! version and I found in the backend >> System >> System information.
The solution was to change the SQL driver in Administrator side to “MySQLI(PDO)”. You get there by going to Global Configuration >> Server, and it will be in the upper right.
I hope this helps someone else out there…