asp.net core 2.1 and Error 502.3 - Bad Gateway

Rumen Lilov

Hello
I am trying to use jsreport nuget packages in my asp.net core 2.1 web app, essentially copying the methods used in the sample WebApp provided. On the first run of my app all works, subsequent runs (via Ctrl-F5) inevitably produce 502.3 Bad Gateway error on start of my app. IIS trace logs below:
ModuleName
AspNetCoreModule
Notification
EXECUTE_REQUEST_HANDLER
HttpStatus
502
HttpReason
Bad Gateway
HttpSubStatus
3
ErrorCode
2147954429 this seems to be ERROR_WINHTTP_CANNOT_CONNECT

I am running on my local machine against local IISExpress
Any help will be appreciated
Thanks
Rumen

jan_blaha

This is not the jsreport error.
Try to add some try/catch and get the actual error.