A. 1. Clear the app cache: Go to your device's Settings > Apps > MuseClass > Storage > Clear Cache. This can help resolve temporary issues that may cause crashes. 2. Update the app: Ensure you have the latest version of MuseClass. Go to the Google Play Store, search for MuseClass, and tap 'Update' if available. 3. Restart your device: Sometimes, a simple restart can resolve underlying issues causing the app to crash.

B. 4. Uninstall and reinstall the app: If the problem persists, uninstall MuseClass by going to Settings > Apps > MuseClass > Uninstall. Then, reinstall it from the Google Play Store.