Laravel IOC Binding Question - getting 500 error

Question

I keep gettings a 500 errors, appdebug = true, but it doesn't show me exactly what the problem is. It logs all other 500 just fine.

I can make the 500 errors go away if i add the below to AppServiceProvider, AND remove PaymentInterface on __construct(PaymentInterface $service) - from MakeACardPayment.

I have to say this doesn't make any sense. The DI with 0 configuration should be taking care of this right? Suggestions on what to try here please.

   // $this->app->bind(MakeACardPayment::class, function($app){
        //     return new MakeACardPayment();
        // });

//AppServiceProvider

App::bind(PaymentInterface::class,StripePaymentService::class);

//Controller for post

class PaymentController extends Controller
{

public function store(Request $request, MakeACardPayment $cardAction)
{
      dd($cardAction->execute([
            'card_number'=> $request['card_number']
            ,'month_exp'=> $request['month_exp']
            ,'year_exp'=> $request['year_exp']
            ,'security_code'=> $request['security_code']
        ]));

    }
}

//uses the interface binding

class MakeACardPayment 
{
    protected $service;
    public function __construct(PaymentInterface $service){

        $this->service = $service;

    }