Why does the queued task process die?

Question

linux

Ubuntu 16.04 LTS OS
There is a script that I run in the background through Laravel queues.
After some time, he writes - "Killed." If you run the script not in the background, then it works without errors. This does not happen on Windows.

What could be the problem?

Answer 1

syslog to help.
Eats a frame or CPU, the system kills.