Any user can submit a job to be run.
Users can kill and remove their own jobs. Only the root user can kill the server, kill other people's jobs, or remove other people's jobs. Your Job ID is 781223547-1 and is the number 1 in the queue. If you get the following error, it usually means that the server is down or the server is busy. Try again in a minute or two, if you still get this error send mail to root.