Sentry.runZonedGuarded(() async {
  WidgetsBinding.ensureInitialized();

  // Errors before init will not be handled by Sentry

  await SentryFlutter.init(
    (options) {
    ...
    },
    appRunner: () => runApp(MyApp()),
  );
} (error, stackTrace) {
  // Automatically sends errors to Sentry, no need to do any
  // captureException calls on your part.
  // On top of that, you can do your own custom stuff in this callback.
});

Sentry.runZonedGuarded(() async {
  WidgetsBinding.ensureInitialized();

  // Errors before init will not be handled by Sentry

  await SentryFlutter.init(
    (options) {
    ...
    },
    appRunner: () => runApp(MyApp()),
  );
}, (error, stackTrace) {
  // Automatically sends errors to Sentry, no need to do any
  // captureException calls on your part.
  // On top of that, you can do your own custom stuff in this callback.
});