Issue in scheduling jobs

hello team ,
every time i run the scheduler job i a m getting the error which says
“Job 43160fe3-f719-b12d-6848-663a0a472e0c (mailtesting) failed in CRON run” can anyone help me solving this this below are my job logs

Maybe you forgot to put comments properly and have a small code error. Please check your code!

I don’t think that mailtesting is a name of anything in core SuiteCRM.

Your problem is either

  • a custom coded scheduler

  • something that came with an add-on