Once an Agent and/or Login are selected under 'Override Agent for File Scan' within the Output section of a job, these entries can not be cleared to an empty status.
Release : ,12.1, 12.2, 12.3
Component : AUTOMIC WEB INTERFACE
Set the values to valid Agent/Login or recreate the JOBS without the Output scan.
A permanent fix is under review for potential release in a future version.