Why does the script hang up from Visual Studio Code freezing?

I start a script for debugging from vsc.



In it is a large cycle for many hours of work. Sometimes the task is fully fulfilled, sometimes stops in an arbitrary place without a pive. All exceptions are caught and passed through the PASS so that the script works to the end even if there are some problems in separate iterations of the cycle. How to understand why he stops? How to restart it if a stop has occurred?