The program itself turns off without errors, how to make it work forever?

Question

Python

Hello.
There is a program that works correctly, 3-4 hours on the server (I run it through python3 main.py & exit), after that it turns off without error messages.

I will not expose the program code, because there is a lot there.
If you run it on the server without & exit, and look in the debug console (prints), it works as it should, but if you run it in the background, it crashes.

if __name__ == "__main__":
    while True:
        try:
            main()
        except Exception as e:
            logging_time_update.add_time_update(e)
            time.sleep(5)

logging_time_update.add_time_update(e) - takes a text value, and adds the time to the database, and the text that I pass to the function.
Everything else works in the same handler in the main function.
When the program stops working - only the last run time is displayed in the database, without error information.

Answer 1

python3 main.py & disown & exit
Better yet, log what she writes:
python3 main.py > main.log 2>&1 & disown & exit

Answer 2

After an error, let it fall quietly, restart not through while True, but with external software, for example, service on systemd. Well, it’s better to log using standard means to a file than to a database, otherwise it can shut up on this request.