I’ve been following this ( https://stripe.com/docs/connect/express-accounts ) guideline but having trouble with using the code that is returned from the Stripe portal and integrating it into my user database. Here is the redirect URI I’m landing on after creating an express account:
We can provide no help unless you post the code you are using, point out what the result should be as per your expectation and where the error is occurring.
Provide us with steps so that we can recreate the bug.