I have machine with windows 10 with iis serving my development work, and docker for windows containers for wpt server and agent (pulled from https://hub.docker.com/r/webpagetest/server and https://hub.docker.com/r/webpagetest/agent.) I used advice from https://www.youtube.com/watch?v=S0wia-9-YLI to configure.
With this private instance I can test hosted urls fine, but I cannot test a local webpage running on iis (http://127.0.0.1/…)
Test Error: Error code 2152398861, navigation error. unable to connect.
I have a settings.ini file with allowPrivate=1
Please suggest some action I can take to permit testing of locally served webpages with a private instance of WPT.