You passed an empty string for 'account'. We assume empty values are an attempt to unset a parameter; however 'account' cannot be unset. You should remove 'account' from your request or supply a non-empty value.
https://pastebin.com/pzYcHwxu
On register no set stripe id
In onboarding give error
Were you able to resolve this? The Stripe API often changes, so if you post the code you currently have, I’d be happy to have a look and help out.