Error ORA-00932: inconsistent datatypes

Hi,
I have a problem with the address geocoding.

The function SDO_GCDR.GEOCODE_ADDR fails with ORA 932 error, with one of our addresses.
This is an example:

declare
  addr sdo_Geo_addr;
  addr_Res sdo_Geo_addr;
begin
    addr := sdo_geo_addr() ;
    addr.municipality := 'Vecchiano';
    addr.settlement := 'Vecchiano' ;
    addr.postalcode := '56019' ;
    addr.country := 'IT' ;
    addr.StreetName := 'Strada Provinciale di Vecchiano' ;
    addr.housenumber := '' ;
    addr.matchmode := 'default' ;

      SELECT SDO_GCDR.GEOCODE_ADDR('GEO',
                                    addr)
        into addr_res
        FROM dual;
       
end;

ORA-00932: inconsistent datatypes: previsto an OUT argument at position 3 that is an instance of a user defined Java class convertible to an Oracle type, ottenuto an object that could not be converted