I am getting the following error when I run the syncconstantcontact.v3.php script.:
error_description":"refresh_token parameter is required for grant_type=refresh_token","error":"invalid_request
It appears there is an issue with the code in getaccesstoken.v3.php since I am getting the following error:
"error_description":"Authorization code is invalid or expired.","error":"invalid_grant"
How do I solve the issue with the expired Authorization code?
Running the first code above should sync contacts in my database with constant contact but that is not working now.
