Zoho API getting projects for portal error

Zoho API getting projects for portal error

Hi,

I'm trying to extract the the projects for a portal through the API. Through my C# implementation I'm getting a 400 bad request when attempting. Furthermore, when I try to do it through my web browser, using the following link: 

https://projectsapi.zoho.com/restapi/portal/[MYPROJECTID]/projects/?authtoken=[MYTOKEN]

and end up with a a response like this: 

This page contains the following errors:

error on line 1 at column 492: Opening and ending tag mismatch: br line 0 and div.