Nullpointer exception while showing the notification.

[waqashussain-dev]

Getting nullpointer exception while showing the notification:
I/flutter ( 7621): PlatformException(error, Attempt to invoke virtual method 'int java.lang.Integer.intValue()' on a null object reference, null, java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.Integer.intValue()' on a null object reference
I/flutter ( 7621): at com.dexterous.flutterlocalnotifications.FlutterLocalNotificationsPlugin.setSmallIcon(FlutterLocalNotificationsPlugin.java:425)
I/flutter ( 7621): at com.dexterous.flutterlocalnotifications.FlutterLocalNotificationsPlugin.createNotification(FlutterLocalNotificationsPlugin.java:326)
I/flutter ( 7621): at com.dexterous.flutterlocalnotifications.FlutterLocalNotificationsPlugin.showNotification(FlutterLocalNotificationsPlugin.java:1146)
I/flutter ( 7621): at com.dexterous.flutterlocalnotifications.FlutterLocalNotificationsPlugin.show(FlutterLocalNotificationsPlugin.java:1462)
I/flutter ( 7621): at com.dexterous.flutterlocalnotifications.FlutterLocalNotificationsPlugin.onMethodCall(FlutterLocalNotificationsPlugin.java:1299)
I/flutter ( 7621): at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:258)
I/flutter ( 7621): at io
I/flutter ( 7621): #0 StandardMethodCodec.decodeEnvelope
message_codecs.dart:653
I/flutter ( 7621): #1 MethodChannel._invokeMethod
platform_channel.dart:315
I/flutter ( 7621):
I/flutter ( 7621): #2 FlutterLocalNotificationsPlugin.show
flutter_local_notifications_plugin.dart:239

showing the notification by below mentioned code
AndroidNotificationDetails androidNotificationDetails =
AndroidNotificationDetails(
color: Colors.blue,
channel.id,
channel.name,
channelDescription: APPConstants.firebaseNotificationChannelDescription,
importance: Importance.max,
priority: Priority.high,
ticker: 'ticker',
);
NotificationDetails notificationDetails =
NotificationDetails(android: androidNotificationDetails);
// flutterLocalNotificationsPlugin.show(notification.hashCode,
// notification.title, notification.body, notificationDetails);
flutterLocalNotificationsPlugin.show(
1, 'notification', 'plain body', notificationDetails,
payload: 'item x');
}

[MaikuB]

The error would be indicative of not having specialised the notification icon correctly by having an appropriate drawable source and specify the name of said resource that is typically by calling the initialize API and specifying the default icon for all notifications. Please check that you have done this. If you believe you have then please provide a link to a repository hosting a minimal app that can reproduce the issue