I want to convert the URL of the web page to UserId or GroupId in Facebook Graph API.

I would like to convert the URL of Facebook to UserId or GroupId as shown on the following site.

http://lookup-id.com/

I can't find the equivalent of the Facebook Graph API.
Does anyone know how to convert it?

It used to work this way, but

https://stackoverflow.com/questions/19030282/get-facebook-group-id-using-identifier-or-url

For some reason, the return value JSON has become blank data, so I can no longer use it.

ex.
{ "data": [ ]}