This is the error log (I will obscure the directory path):
[05-Feb-2021 07:18:52 UTC] PHP Fatal error: Uncaught (Status 400) (Request req_Jspi2bbusUNXMh) You passed an empty string for ‘client_reference_id’. We assume empty values are an attempt to unset a parameter; however ‘client_reference_id’ cannot be unset. You should remove ‘client_reference_id’ from your request or supply a non-empty value.
thrown in XXX/contact-form-7-paypal-add-on/includes/stripe_library/lib/Exception/ApiErrorException.php on line 38
