Log file of the data-import bench command

Hi,

I used the bench command data-import (using terminal) for importing the data into ERPNext DocType.

When the Data import is completed, there are no logs or any information in the terminal window. But there were some issues with some of the records it seems and they are not imported.

How to get the log file of this import process - basically I am looking for the records which are not imported due to some functional errors. My question is how to check the error log and the records which are failed through.