Issue in preprocessing ALOS 1 SAR data using single_scene_stripmapAPP py

[rprasanth49]

I installed ISCE 2.5.3 version and updated the preprocessing scripts per instructions. I am trying to create interferograms using ALOS 1 raw data of the Maine region mentioned in the example. single_scene_stripmapApp Python script is creating reference.xml, secondary.xml, stripmapApp.xml, and stripmapProc.xml files. However, it is failing while running the below command from the single_scene_stripmapApp.py script.

cmd = '$ISCE_HOME/applications/stripmapApp.py stripmapApp.xml --end=interferogram | tee stripmapApp1.txt'

Attached are the error screenshot and all the log and XML files. Is there anything I am missing? Or Do I have to downgrade the ISCE version?

isce.log
stripmapApp1.txt
stripmapApp2.txt