trying to return all DriveItems that on a site. I do the following to get the drive which returns a result
GET https://graph.microsoft.com/v1.0/sites/mycompany.sharepoint.com:/sites/mysite:/drive
but the following returns a "specified url is invalid"
https://graph.microsoft.com/v1.0/sites/mycompany.sharepoint.com:/sites/mysite:/drive/items