Single sign on not working

[malikkamranabid]

Hi,
I wanted to try to single sign on but whenever i tried i get session expired message.

This is the error which comes on url.

https://kamrantestcompany.activehosted.com/admin/index.php?error_mesg=timeout&redir=aHR0cHM6Ly9rYW1yYW50ZXN0Y29tcGFueS5hY3RpdmVob3N0ZWQuY29tL2FkbWluL21haW4ucGhwP19zc290PTExZDEyYTFlYWE1NmVkZmJmOGRjYzVjYjQ1ODI5YWQ5

Not sure what does it mean. I want to figure this out if you could help me.

Using code from this link