https://arcgis.vgsi.com/server/rest/services/Gorham_ME
https://arcgis.vgsi.com/server/rest/services/Gorham_METhis 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.