When opening the inspector on a valid Ember site, it doesn't load anything and is simply blank. I know there is at least one other person on the Ember Discord who is also experiencing this. There are no errors in the console or in the terminal.
Embe: 3.13.4
Ember Data: 3.13.1
Ember Inspector: 3.12.0
Chrome version 78.0.3904.97
Firefox (latest)

Thank you for reporting! Sorry about the trouble, the team is working to quickly correct the issue now. Hang tight, we'll get another update out soon...
Reinstalling the add-on in Firefox seems to dislodge the problem.
This should be fixed in the latest published version (3.12.2 in chrome and firefox)! Sorry about the trouble!
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Thank you for reporting! Sorry about the trouble, the team is working to quickly correct the issue now. Hang tight, we'll get another update out soon...