composer require mirbaagheri/invoice

Add below to your Laravel config file located at config/app.php:
Add Mirbaagheri\Invoice\Laravel\InvoiceServiceProvider::class to providers array.
Add 'Invoice' => Mirbaagheri\Invoice\Laravel\Facades\Invoice::class to aliases class.

Run the following command to publish the migrations and config file:
php artisan vendor:publish --provider="Mirbaagheri\Invoice\Laravel\InvoiceServiceProvider"

Run the following command to migrate Sentinel after publishing the assets:
php artisan migrate