Checkout error: "Parameter Invalid Empty"
If you receive the "Parameter Invalid Empty" error code, this means one of the required fields on the checkout page is empty. Try filling out all required fields (left and right side of the checkout page) again to process your order.
Note: You may see this following message on the checkout page which provides additional context about the error code - "You passed an empty string for 'email'. We assume empty values are an attempt to unset a parameter; however 'email' cannot be unset. You should remove 'email' from your request or supply a non-empty value." This error message (parameter_invalid_empty-email) means that the the email field on the left side of the checkout page was empty when completing the checkout process. Enter your email address and complete any outstanding fields to resolve this error message.