https://gis.aecomonline.net/arcgis/rest/services/CalhounCO
https://gis.aecomonline.net/arcgis/rest/services/CalhounCOThis 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.