[firebase_messaging]: Can't build project after flutter upgrade to 3.44.0

[Auramel]

Is there an existing issue for this?

• I have searched the existing issues.

Which plugins are affected?

Messaging

Which platforms are affected?

No response

Description

After upgrade Flutter to 3.44.0 I can't build my project

Errors:

How I can fix it?

Reproducing the issue

flutter upgrade

Firebase Core version

4.9.0

Flutter Version

3.44.0

Flutter dependencies

flutter doctor -v

[✓] Flutter (Channel stable, 3.44.0, on macOS 26.5 25F71 darwin-arm64, locale ru-RU) [587ms]
    • Flutter version 3.44.0 on channel stable at /usr/local/Caskroom/flutter/2.10.1/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 559ffa3f75 (3 days ago), 2026-05-15 14:13:13 -0700
    • Engine revision 4c525dac5e
    • Dart version 3.12.0
    • DevTools version 2.57.0
    • Feature flags: enable-web, enable-linux-desktop, enable-macos-desktop, enable-windows-desktop, enable-android, enable-ios, cli-animations, enable-native-assets, enable-swift-package-manager,
      omit-legacy-version-file, enable-lldb-debugging, enable-uiscene-migration

Additional context and comments

No response

[SelaseKay]

Hi @Auramel, thanks for the report. Have you tried flutter clean and rebuilding again?

[Auramel]

Hi @Auramel, thanks for the report. Have you tried flutter clean and rebuilding again?

Hi, yes, I tried:

• flutter clean
• flutter pub get
• pod update
• flutter pub upgrade --major-versions

Unfortunately, none of these helped.

[Auramel]

Errors, for example:

[developweblink]

Same problem

[JakobLichterfeld]

same issue with firebase_analytics (see #18295) and on my end with firebase_auth example folder, downgrade to 6.5.0 didn't solve it.

[SelaseKay]

Hi all, I'm looking into it and will create a PR to resolve this soon.

[SelaseKay]

Hi @Auramel, @JakobLichterfeld — I’m currently unable to reproduce the issue using the firebase_messaging and firebase_auth example apps. I tested by running flutter run with Flutter 3.44.0 on iOS against both example apps, and everything appears to work as expected.

Could you kindly share the exact steps or setup you used to reproduce the issue?

[JakobLichterfeld]

Could you kindly share the exact steps or setup you used to reproduce the issue?

• I upgraded Flutter to 3.44.0 via fvm
• PATH="/usr/bin:$PATH" flutter clean
• PATH="/usr/bin:$PATH" flutter pub get
• PATH="/usr/bin:$PATH" dart run build_runner build

and firebase_auth is complaining, for example:

"resource": ".../build/ios/SourcePackages/firebase_auth-6.5.1/example/lib/auth.dart",

Target of URI doesn't exist: 'package:barcode_widget/barcode_widget.dart'.
Try creating the file referenced by the URI, or try using a URI for a file that does exist.

Target of URI doesn't exist: 'package:firebase_auth_example/main.dart'.
Try creating the file referenced by the URI, or try using a URI for a file that does exist.

no build possible

flutter doctor -v

flutter doctor -v [✓] Flutter (Channel stable, 3.44.0, on macOS 26.5 25F71 darwin-arm64, locale de-DE) [347ms] • Flutter version 3.44.0 on channel stable at /Users/jakob/fvm/versions/3.44.0 • Upstream repository https://github.com/flutter/flutter.git • Framework revision 559ffa3f75 (vor 4 Tagen), 2026-05-15 14:13:13 -0700 • Engine revision 4c525dac5e • Dart version 3.12.0 • DevTools version 2.57.0 • Feature flags: enable-web, enable-linux-desktop, enable-macos-desktop, enable-windows-desktop, enable-android, enable-ios, cli-animations, enable-native-assets, enable-swift-package-manager, omit-legacy-version-file, enable-lldb-debugging, enable-uiscene-migration

[✓] Android toolchain - develop for Android devices (Android SDK version 36.1.0) [1.141ms]
• Android SDK at /Users/jakob/Library/Android/sdk
• Emulator version 36.3.10.0 (build_id 14472402) (CL:N/A)
• Platform android-36, build-tools 36.1.0
• Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
This JDK is specified in your Flutter configuration.
To change the current JDK, run: flutter config --jdk-dir="path/to/jdk".
• Java version OpenJDK Runtime Environment (build 21.0.10+-117844308-b1163.108)
• All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 26.5) [770ms]
• Xcode at /Applications/Xcode.app/Contents/Developer
• Build 17F42
• CocoaPods version 1.16.2

[✓] Chrome - develop for the web [6ms]
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Connected device (4 available) [6,0s]
• (wireless) (mobile) • • ios • iOS 26.5 23F77
• iPhone 17 Pro (mobile) • • ios •
com.apple.CoreSimulator.SimRuntime.iOS-26-5 (simulator)
• macOS (desktop) • macos • darwin-arm64 • macOS 26.5 25F71 darwin-arm64
• Chrome (web) • chrome • web-javascript • Google Chrome 148.0.7778.168

[✓] Network resources [223ms]
• All expected network resources are available.

• No issues found!