API url is not working

I am new in API
I need to get the recent alert from orchestrator from process using API. And also i need to filter out notification or message. I am using below URL but it’s not working.
please suggest what correction is require in URL.

https://platform.uipath.com/odata/Alerts?$orderby=CreationTime desc&$top=1&$filter=Robot/Name eq ‘Robot_name’&$select=Message