If you are using the Python API in Ashes, you can get errors while running the simulation that appear in the simulation log. When an error occurs, you can access the simulation log by clicking the warning icon located next to the clock, as illustrated in the image below:

You can have the following error messages:

3.13.3.15.1 Python script maximum timeout exceeded
3.13.3.15.2 Could not find a Python executable
3.13.3.15.3 The Python script process exited with an error message