Tasks API call

Tasks API call

Hi, I'm trying to do an API call on tasks and it's not working. I'm getting a "General Error" with code 6500. This is the URL I'm accessing:

https://projectsapi.zoho.com/restapi/portal/kyledavidgroup/projects/605433000000032011/tasks/?AUTHTOKEN=0dc167bf942d55c7b99dceeeb44b88ce

However, I was just able to access the same API with the same URL about 10 mins ago and it worked. Why am I now getting an error?

Thank you.