In case anyone else facing the same issue and for future reference, I include here with my workaround for the error here.

I managed to solve it by referring to this forum (Link: http://www.progtown.com/post37004192.html#p37004192)

I have simply done the following:

Copy all DLL from folder <cachesys>\dev\cpp\lib to <python installation path>\Lib\site-packages\intersys

Although I not sure whether how legit is this solution, but this is currently a logical and plausible workaround for the problem I faced here.

Regards,

Ivan

Thank you for your comment. I have no issue with reading the output. The problem I have is regarding the DLL error. From what I understand, $zf invokes OS shell which should be equivalent to CMD. So why is running same script via these 2 approaches give 1 success 1 error. Am I missing some configurations/parameters for $zf?