Hi Sarada,
As mentioned by Patrick, please mention the full details from the last node,
Otherwise I think it could be the most common issue with privileges. From SQL Editor try out the following statements
--Replace <SCHEMA_NAME> with the schema of underlying tables for Attribute Views.
GRANT SELECT ON SCHEMA <SCHEMA_NAME> TO _SYS_REPO WITH GRANT OPTION;
GRANT EXECUTE ON SCHEMA <SCHEMA_NAME> TO _SYS_REPO WITH GRANT OPTION;
--
Shreepad