500 Error on Add Payment Method

[nmjacobson]

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I also cross posted here before seeing your reply:

Paypal REST Issue

I know this is a bit old, but I’m having the same issue, so I’m hoping to reopen it. It seems using a different payment provider solved it for the original post, but hoping to avoid that process. Processing cc payments via paypal when you enter the cc info for a single invoice works fine, but even with auto bill enabled, there is no option to save a payment method during paying an invoice and if you try to add one manually via the customer portal, I get the 500 error. I tried recreating the A…