13c OEM Information Publisher Reports: Error rendering element. Exception: ORA-00942: table or view does not exist

When using the OEM Reporting System you are limited to access the repository only (MGMT_VIEW). So, the solution is to grant select on schema.table_name to MGMT_VIEW.

You need give  a read permission to MGMT_VIEW.

grant select on sysman.TABLE_NAME to MGMT_VIEW;

This will help you remove the error while reporting the data from OEM Information publisher.