Trigger `checkout_error` when incorrect credit cart is entered

Hi,

We are author of Flux Checkout, we have added some improved UI elements to the Checkout page. We would like to update the HTML of the submit button when there is any kind of error. We are able to capture all errors with checkout_error but it’s not triggered when there is an error with the credit card being empty https://prnt.sc/dDBVtlSAqeuq

We have inspected your source code and found that if you could trigger checkout_error JS event within the onError function of assets/js/stripe.js file, it could solve our problem.

Is this something you can help us with?