Class 'Laravolt\Indonesia' not found

[Mulyawan Sentosa]

I got this error Class 'Laravolt\Indonesia' not found when call it from my controller.
We have followed your procedure to install this. But the error occur. I use Laravel 5.4. How to fix this?
thank you.

[Bayu Hendra Winata]

Can you provide some snippets?

[Dimas Wibowo]

Same problem here. I use Laravel 5.5

[Bayu Hendra Winata]

I think you import the wrong path, it should use Indonesia, not use Laravolt/Indonesia