https://arcgis.vgsi.com/server/rest/services/New_Haven_CT
https://arcgis.vgsi.com/server/rest/services/New_Haven_CTThis is a folder inside the services directory, not the server root. Trim back to /rest/services to connect to the whole server.
This is a folder inside the services directory, not the server root. Trim back to /rest/services to connect to the whole server.