PaymentIntentId must be of type string

I tested the module again with a custom amount and token. The custom amount element tested against textfield and number webform elements and it worked fine for me.
Can you export your webform and paste it here so I can test your use case?

Certainly! I created a simple test webform just to make sure that I could get things running:

stuff:
  '#type': textfield
  '#title': stuff
price:
  '#type': number
  '#title': price
  '#min': 0
  '#required': true
email:
  '#type': email
  '#title': email
number_that_exists:
  '#type': computed_twig
  '#title': 'number that exists'
  '#template': '{{ 100.00 }}'
  '#whitespace': spaceless
  '#store': true
value:
  '#type': value
  '#title': value
  '#value': '100.00'

The other configs are quite long but I can provide them if necessary; they should be stock webform configs because I've done nothing but create the webform with the fields above. The different field types are for testing different ways of passing a number in case that was affecting my use case. All fail with the same error and won't let me save the Stripe Payment element.

Shreya_th → made their first commit to this issue’s fork.

Fixed and added to the latest dev branch.