Where is log for CGI Errors in IIS

Question

I use IIS to run CGI scripts written on python (hgweb.cgi).

But if something goes wrong IIS doesn't provide detailed information. It just writes in log:

2018-10-20 10:14:52 W3SVC1 ::1 POST /hgweb.cgi/ cmd=unbundle 9000 - ::1 mercurial/proto-1.0+(Mercurial+4.1.3) - localhost:9000 502 2 1 295

Error 502. But why it was happened it doesn't write. I belive this error is detailed in stderr output of python script, but where to see it?

Answer 1

Make sure that iis logging is enable. If it's not enabled, you can see below link to find out:

How to enable logging in Internet Information Services (IIS)

Answer 2

My solution is: https://docs.python.org/2.0/lib/node246.html I redirected stderr to stdout and made try catch in script. This looks like a hack, but it works...