I updated my mac system to 11.4 and xcode to 12.5 and this issue happened to me yesterday ,i had tried many ways to sovle it, but still didn’t work, anyone who can tell me how to fix this please!
Can not launch simulator or preview either
Sorry to hear you are having problems getting simulators and previews working. 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 and simulator 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)