Laravel 5.2: php artisan returns "Could not find driver" in terminal

I am adapting the Socialite topic of JOJO Themes in a site and it is giving me an error when executing php artisan in the terminal of my server.

I have already made the corresponding configuration to the database and the application in the .env file and it stayed like this:

DB_CONNECTION=mysql
DB_HOST=localhost // Esto lo agregué yo, porque no venía en el brindado
DB_PORT=3306
DB_DATABASE=basededatos
DB_USERNAME=usuario
DB_PASSWORD=contraseña

I checked the PHP information in a custom route in routes.php (which works perfectly):

Route::get( '/phpinfo', function () { 
    echo phpinfo()->pdo_mysql;
} );

And he returns me (the important part I think):

Apparently I have everything working ... but it keeps showing up:

  

[PDOException]

     

could not find driver

Well, ideas are accepted. Installing MySQL is not an option, because it is installed.