I'm trying to connect my Symfony 4 application with my mysql database but I'm having some issues.
I have installed doctrine with these commands line: 
composer require symfony/orm-pack and composer require symfony/maker-bundle --dev. 
After that I have configured the .env to connect to my localhost mysql database with the correct user and password. 
Then I create my entity class USER and I tried to migrate that entity to the database with the command line php bin/console make:migration but this error appear on my terminal: 
In AbstractMySQLDriver.php line 106: An exception occurred in driver: could not find driver
In PDOConnection.php line 31: could not find driver
In PDOConnection.php line 27: could not find driver
Every step I followed is from the symfony 4(https://symfony.com/doc/current/doctrine.html) documentation. Any idea what am I doing wrong?
Thanks.