Hi. I tried to launch SwiftUI preview. But I got an error "AppLaunchTimeoutError"
I attach the diagnostics. Does anyone know how to fix this problem?
Sorry to hear you are having problems getting previews working.
To start from a fresh slate you can use the terminal app and run xcrun simctl --set previews delete all
.
If that still doesn't resolve issue then probably best next step will be to file a feedback with diagnostics. We will need the diagnostics Xcode Previews generates in order to make sure we understand the error the previews system is encountering.
- When you get an error in Xcode Previews, an error banner appears in the canvas
- Click the "Diagnostics" button in that banner
- In the sheet that appears, click "Generate Report" in the bottom left of the sheet
- Attach (or make from the folder) the resulting zip file to the bug (will be named something like previews-diagnostics-0123456789.zip)
Then report back here with your feedback ID and I can make sure it gets to the right folks as soon as possible.