Due to me not being a coding expert, I can’t give you exact tips, though I could think of some things and research a bit.
The "Illegal Instruction: 4" error typically means that the application you're running is trying to use a feature or instruction that isn't supported by the version of macOS you're using.
In simpler terms, the app is trying to do something that your current macOS version doesn't understand how to handle. This can be due to:
- Outdated Software: The app might be using newer system calls or instructions not available in your current macOS version.
- Corrupted Binary: The app's binary might be corrupted or improperly compiled.
Maybe restart your Mac in case it is a temporary issue, make sure there are no updates for MacOS or the Weather App, and reach out to apple support to let them know?