I have asp.net web api service which is called by our client.
Client sends a request, it get's processed, data ends up in MS SQL. Our app logs don't catch any errors, but the call itself took 30s but usual is less than 2s.
On the other hand IIS log shows 500, and it pops up in failed log tracing.
here is a link to failed log tracing file:
https://www.dropbox.com/s/7twz93gpz23asco/failed%20trace%20log.xml?dl=0
I will also paste it here...