Job is not running

my job was running fine previously for many days… but now all of a sudden today when i logged in the job was deleted along with few of the tests

who deleted the job and the tests in my account?

anyway I created new job and tried to run the same test which had no problem running in past but NOW THE BROWER (SELENIUM) CLOSES AUTOMATICALLY THE MOMENT THE JOB LAUNCHES.

please resolve this issue? is it something which has happened after you upgraded something?

For me, jobs are not running as well on the scheduled time and the time is deleted by itself. Even I tried to run the test and job manually but didn’t run either