index.js:7 IntegrationError: stripe.confirmPayment(): the confirmParams.return_url argument is required when using automatic payment methods.

[rigorcadiz]

Describe the bug
I'm trying to use the prop redirect="if_required" to create a payment element without setting up a payment intent, but every time I test the stripe form using the dummy card details, I got this error from console.

index.js:7 IntegrationError: stripe.confirmPayment(): the `confirmParams.return_url` argument is required when using automatic payment methods.

To Reproduce
This is the format of my stripe element component:

<stripe-element-payment
  ref="paymentRef"
  :elements-options="elementsOptions"
  :confirm-params="{
    return_url: '',
  }"
  :pk="pk"
  @error="errorPayment"
  @confirmed="paymentSuccess"
  redirect="if_required"
></stripe-element-payment>

Expected behavior
I expect it to work without an error and receive a success response from paymentSuccess method.

What did I missed?

Additional:
Why the redirect property is not documented here? https://docs.vuestripe.com/vue-stripe/stripe-elements/payment

[zedrdave]

The documentation is sorely lacking on the entire redirect='if_required' flow…