Access denied for user 'root'@'localhost' - Laravel

Question

I have an application with Laravel 4, that runs in localhost correctly, but when I uploaded it in my host I received the error .

app>config>database.php file is:

Answer 1

Maybe you should add double-quotes for password in env:

# Config: database
DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=db_name
DB_USERNAME=db_user
DB_PASSWORD="db_password"

and

php artisan config:clear