Congratulations, your tunnel is up and running!

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

Original error: read tcp 127.0.0.1:59240->127.0.0.1:8000: wsarecv: An existing connection was forcibly closed by the remote host.

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.