Job Queue is not running but show success status.

Hi Experts,

I've faced a confusing incident. I create Job Queue for running a Codeunit 50013 (when this Codeunit run, the file at the destination will import into the NAV). Actually, Job Queue is not running but show success status. So, I have to manually run a Codeunit 50013 to import the file instead using a Job Queue. And I also check an event viewer but have no clue. 

I'm looking for the solution about this issue.