Worker debugger error: no preview configured here




i’m trying to setup demo worker. Worker works well in the browsers, but in the preview mode i keep getting “no preview configured here” message. It seems to work in firefox. Is it a bug or am I missing something?

Screenshot of the error is attached.


Just for someone in the future to find a solution to a problem:
a) CF support wrote me ‘just use chrome’, but i was using chrome;
b) Appearantly probably some extension was breaking things;

Tried incognito - all works well.


Quick followup. Did test & trial and found out - it had been Ghostery Chrome extension that was messing things up.