Standard geocoders Loc_name or GEOLEVEL field appear in the output customer layer. Match Level Summary Report requires one of those to be present. If they are missing, the layer is probably not geocoded. Note that the error message shown is always the same—Cannot find field: Loc_name/GEOLEVEL—because parameters passed are always Loc_name and GEOLEVEL.
Geocode the customer layer using one the standard Business Analyst Customer Setup tools.