[Feature] Better output from failure with headless=false

[thernstig]

Let's say you ssh to a remote host and run Playwright there. Then if you run with headless=false you get this error:

    Protocol error (Target.setAutoAttach): Target closed.

It would be nice if it gives an error message that is understandable in this scenario.

[hoIIer]

just ran into this when doing await chromium.launch({ headless: false }) inside a docker container (goal being to be able to debug from host browser when needed e.g. docker run -p 9229:9229 )

[pavelfeldman]

Ok, I think we are doing a much better job now explaining the exact errors that occurred during the launch. Please give it a try!