Congratulations, your tunnel is up and running!

However... it looks like the application you're trying to expose is not available.

Original error: dial tcp [::1]:8080: connectex: No connection could be made because the target machine actively refused it.

This request would normally end up with 502 status code.
If that's what you intended please restart the tunnel with --disable-proxy-error-page option
to remove this page and get regular 502 error.