Issues with Function favroparser() when trying to do a COPY statement

Hello Vertica,
User is trying to run the following command in our Vertica Database:
COPY nestedAvro FROM 'c:/Users/Fletcher/Desktop/nestedAvro.avro' PARSER favroparser(flatten_maps=FALSE);
And she is getting the following error:
[Code: 3457, SQL State: 42883]  
[Vertica][VJDBC](3457) ERROR: Function favroparser() does not exist, or permission is denied for favroparser()
We tried to give different grants to the user, but they were not sucessfull:
GRANT ALL ON "201852_GOBIA_ProductRepo".nestedAvro TO srvc_gobia_itg;
GRANT ALL ON LIBRARY public.FlexTableLib to srvc_gobia_itg;
Could you please help us find what's going on, Please?.
Thanks,
Jorge Hernandez.