Migration in Laravel

I want to make a migration to MySQL, when I put the php artisan migrate instruction in my command line, I get the following error in console:

  

In Connection.php line 664:                                                                                     could not find driver (SQL: select * from information_schema.tables   where t able_schema = course and table_name = migrations)

     

In Connector.php line 67:                               could not find driver

In my .env file I have defined

DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=curso
DB_USERNAME=root
DB_PASSWORD=root

How could I solve it?