Background process 'Worker #9ccb013b' was stopped due to a shutdown request

In my process, we have multiple cron jobs and in each job, there are multiple stagings like 1 to 9, after stage 4 or 5 job started stopping with “Background process ‘Worker #9ccb013b’ was stopped due to a shutdown request.” error. Please help how to deal with it and let me know if more information required.