You need to enable the mysql PDO driver. You will need to edit 1 or 2 php.ini files, depending on your system.
First you need to edit the use of apache php.ini, you can find it by creating a new file that executes phpinfo (), check it through the browser and look for "php.ini".
The second is the one that uses the command line, open a terminal (start-run-cmd.exe) and run php -i > phpinfo.txt , then open a text file and search for "php.ini".
You are looking for part of its extensions, uncomment the line with pdo_mysql (delete at the beginning). After all this, restart apache and you will be fine.
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