[Zope] ProgrammingError

Hi, When i click on "Add MailManager", I get the below error *Error Type: ProgrammingError Error Value: ERROR: RETURN cannot have a parameter in function returning void at or near "NONE" at character 1293 -- Trigger function up maintaining the search indicies on mm_ticket -- -- This trigger gets calleÑ * Any Clue Thanks and Regards Kaushal