I am having the same problem w/ an M1 2020 Macbook Air, OS 11.7 Big Sur. I reinstalled the emulator and aistarter is running and listening on port 8004, but it goes for infinite time saying 'this might take a minute or two.' I tried it on Chrome, Safari, and Firefox. Same result. Is there something else I can try? Is there a log file I can look at? Is there an uninstaller? Thanks.
I posted this as a reply to an old post (though to the newest one I could find on emulator problems) and am not sure how / if / that it is visible. I have checked and tried everything suggested in the responses (though many of the old issues seem to be with the PC version). At one point, the emulator worked on my Mac (though I haven't tried to use it since during remote teaching and learning). I appreciate any help you can offer.