The link leads to a message saying:
"403: Forbidden
You do not have access to the requested resource."
If you do not have permission to view a request, you will receive this message. Speak to your HR manager/administrator about gaining access.
Please note you will need the HR Manager role to undertake HR Management tasks generally found under the Org Admin tab. You will need the Administrator role to undertake all system configuration tasks found under the Configuration tab.