Any update regarding this issue? I have the same for many months and almost gave up. Widgets support in macOS is terrible. It's impossible to preview the widgets and with the Preview way suggested by Rico, I get an error "This platform does not support previewing widgets.".

Hi Rico. I tried all of the above you mentioned. I cleaned everything, reinstalled Xcode and remove my widgets from my app and recreated them. The simulator is not crashing anymore but any widget with intent get a CHSErrorDomain error 1103. You can even start a fresh project and a widget with intent and run it and you'll get the same error. In the console, I only get errors from chronod : Requested to add extension, but purging instead because we shouldn't cache I And one from runningboardd : Memorystatus failed with unexpected error: Invalid argument (22). I'm out of idea.

I'm having the same issue too. I'm using App Group to share a file containing data between the main app and the widgets. It used to work just fine, but now, the Widget get a permission denied error when trying to access the file. I tried to rename the app group on both side, reset cache & derived data, etc... it just doesn't work. I also tried with the default Apple template and it doesn't work either.