React-native app is crashing because of react-native-notification

am using react-native-notification for local push notification once I installed the library and configured it for Android ( made all necessary changes using that documentation
Android Installation | React Native Notifications )

After finishing all configurations I installed my app and the local notifications were working smooth on emulator but I got 2 issues along with it
1: My app started crashing anytime it wants.
2: Local notifications which are working on emulator , are not working in APK.

Please help ,me resolving it …