[Solved] Flutter/Dart – FlutterFirebaseMessagingPlugin.java – Build fails with Exception “error: cannot find symbol”

Hello Guys How are you all? Hope You all are fine. When I was trying to run my flutter app and suddenly I get the following error in my stack track. Flutter/Dart – FlutterFirebaseMessagingPlugin.java – Build fails with Exception “error: cannot find symbol” in flutter. So today Here I come with all possible solutions for this error.

We are providing you all possible solutions to solve this error. let’s start this article without wasting your time.

How Flutter/Dart – FlutterFirebaseMessagingPlugin.java – Build fails with Exception “error: cannot find symbol” Error Occurs ?

Today I updated to Null Safety sdk: ">=2.12.0 <3.0.0" I’m getting errors when I try to build my Flutter app in Android Studio.

C:\admin\flutter\.pub-cache\hosted\pub.dartlang.org\firebase_messaging-9.1.4\android\src\main\java\io\admin\flutter\plugins\firebase\messaging\FlutterFirebaseMessagingPlugin.java:20: error: cannot find symbol
    import com.google.firebase.iid.FirebaseInstanceId;
                                  ^
      symbol:   class FirebaseInstanceId
      location: package com.google.firebase.iid
    C:\admin\flutter\.pub-cache\hosted\pub.dartlang.org\firebase_messaging-9.1.4\android\src\main\java\io\admin\flutter\plugins\firebase\messaging\FlutterFirebaseMessagingPlugin.java:21: error: cannot find symbol
    import com.google.firebase.iid.Metadata;
                                  ^
      symbol:   class Metadata
      location: package com.google.firebase.iid
    C:\admin\flutter\.pub-cache\hosted\pub.dartlang.org\firebase_messaging-9.1.4\android\src\main\java\io\admin\flutter\plugins\firebase\messaging\FlutterFirebaseMessagingPlugin.java:152: error: cannot find symbol
                      : Metadata.getDefaultSenderId(FirebaseApp.getInstance());
                        ^
      symbol:   variable Metadata
      location: class FlutterFirebaseMessagingPlugin
    C:\admin\flutter\.pub-cache\hosted\pub.dartlang.org\firebase_messaging-9.1.4\android\src\main\java\io\admin\flutter\plugins\firebase\messaging\FlutterFirebaseMessagingPlugin.java:153: error: cannot find symbol
              FirebaseInstanceId.getInstance().deleteToken(senderId, "*");
              ^
      symbol:   variable FirebaseInstanceId
      location: class FlutterFirebaseMessagingPlugin
    C:\admin\flutter\.pub-cache\hosted\pub.dartlang.org\firebase_messaging-9.1.4\android\src\main\java\io\admin\flutter\plugins\firebase\messaging\FlutterFirebaseMessagingPlugin.java:165: error: cannot find symbol
                      : Metadata.getDefaultSenderId(FirebaseApp.getInstance());
                        ^
      symbol:   variable Metadata
      location: class FlutterFirebaseMessagingPlugin
    C:\admin\flutter\.pub-cache\hosted\pub.dartlang.org\firebase_messaging-9.1.4\android\src\main\java\io\admin\flutter\plugins\firebase\messaging\FlutterFirebaseMessagingPlugin.java:166: error: cannot find symbol
              String token = FirebaseInstanceId.getInstance().getToken(senderId, "*");
                             ^
      symbol:   variable FirebaseInstanceId
      location: class FlutterFirebaseMessagingPlugin

Inshort error saying FlutterFirebaseMessagingPlugin.java “cannot find symbol”. So what does this mean and how do I fix it.

How to Solve Flutter/Dart – FlutterFirebaseMessagingPlugin.java – Build fails with Exception “error: cannot find symbol” Error?

Question:
Answer:

Solution 1

As I updated my SDK version to null safety all we need to do is just Update your firebase_messaging in pusbpec.yaml to version that supports null-safety (for example: firebase_messaging: ^10.0.0, and call flutter pub get from terminal

1. Open pubspec.yaml file.
2. Get the latest version of firebase_messaging from here.
3. Updated to latest verison.
4. Then flutter pub get.
5. That’s all.

Solution 2

First, get the latest versions of your firebase dependencies from pub.dev

Run the commands:

flutter pub upgrade
flutter pub get
flutter clean

Invalidate caches and restart

and then try running the app

Summery

So, It’s All About this error. I hope this tutorial helps you to solve your error. Please Comment Below if You stucks anywhere with my code.

Also Check Out Below Tutorials

• No named parameter with the name ‘nullOk’ error in flutter
• Gradle failure may have been because of AndroidX incompatibilities in this Flutter app
• Flutter: CocoaPods’s specs repository is too out-of-date to satisfy dependencies
• The argument type ‘Future’ can’t be assigned to the parameter type ‘void Function()’
• Flutter SDK is not found in the specified location in Android Studio