The problem is that the chunkId is coming back with the full URL:
chunkId: https://api.constantcontact.com?next=52
So the currentAddress field looks like this:
https://api.constantcontact.com/ws/customers/{username}/listshttps://api.constantcontact.com?next=52"
Hi Rich,
Thanks for reporting this. It uncovered a problem on our end where the access token can't be passed in a query parameter when the next query parameter is also present. We're working to resolve that on our end, but I don't have an ETA on when it will be fixed. Sorry for the inconvenience.
Best Regards,
Shannon W.
API Support Specialist