Issue in php version >= 7.4

[bipinbalami21]

We cannot create a customer. It shows an error "Could not create customer.".
We are facing an issue in creating a customer on stripe because of the following error:
array_key_exists(): Using array_key_exists() on objects is deprecated. Use isset() or property_exists() instead

[greenhornet79]

Please send an email to [email protected] and our support team will be able to help you out.

That error you mentioned is just a deprecation notice in the Stripe PHP library, so it wouldn't stop the customer creation process. There must be something else going on.