The well-known text (WKT) input is empty. To input an empty instance, specify an empty instance of one of the following types: ...

24112: The well-known text (WKT) input is empty. To input an empty instance, specify an empty instance of one of the following types: Point, LineString, Polygon, MultiPoint, MultiLineString, MultiPolygon, CircularString, CompoundCurve, CurvePolygon or GeometryCollection.