restart After Kill not working on IOS

[ps108developer]

await BackgroundLocationTrackerManager.initialize( backgroundCallback, config: const BackgroundLocationTrackerConfig( loggingEnabled: true, iOSConfig: IOSConfig( activityType: ActivityType.FITNESS, distanceFilterMeters: null, restartAfterKill: true, ), ), );

i set the restartAfterKill true in iOS Config but its not working after kill the app Location update was not working
so how can i fix this issue ??