Thanks quinlanj. I tried the debugger-ui address, but in Chrome I am seeing…
No ‘Access-Control-Allow-Origin’ header is present on the requested resource. Origin ‘http://localhost:19001’ is therefore not allowed access. If an opaque response serves your needs, set the request’s mode to ‘no-cors’ to fetch the resource with CORS disabled.
My app doesn’t work in any kind of simulator since running ‘exp publish’ this morning. I have spent the last several hours trying to restore the functionality that existed before I ran ‘exp publish’. I created a separate issue at Does 'exp publish' change an app? (e.g. break it) -- RESOLVED