[bug]: flutterfire configure fails

[kingwill101]

Is there an existing issue for this?

• I have searched the existing issues.

CLI Version

1.2.0

Firebase Tools version

14.4.0

Flutter Doctor Output

flutter doctor -v                        ✔ 
[✓] Flutter (Channel stable, 3.32.0, on Manjaro Linux 6.12.28-1-MANJARO, locale en_US.UTF-8) [305ms]
    • Flutter version 3.32.0 on channel stable at /home/kingwill101/fvm/versions/3.29.2
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision be698c48a6 (8 days ago), 2025-05-19 12:59:14 -0700
    • Engine revision 1881800949
    • Dart version 3.8.0
    • DevTools version 2.45.1

[✓] Android toolchain - develop for Android devices (Android SDK version 35.0.0) [3.6s]
    • Android SDK at /home/kingwill101/Android/Sdk
    • Platform android-35, build-tools 35.0.0
    • ANDROID_HOME = /opt/android-sdk
    • ANDROID_SDK_ROOT = /opt/android-sdk
    • Java binary at: /home/kingwill101/.local/share/JetBrains/Toolbox/apps/android-studio/jbr/bin/java
      This is the JDK bundled with the latest Android Studio installation on this machine.
      To manually set the JDK path, use: `flutter config --jdk-dir="path/to/jdk"`.
    • Java version OpenJDK Runtime Environment (build 21.0.6+-13368085-b895.109)
    • All Android licenses accepted.

[✓] Chrome - develop for the web [185ms]
    • CHROME_EXECUTABLE = /usr/bin/chromium

[✓] Linux toolchain - develop for Linux desktop [610ms]
    • clang version 19.1.7
    • cmake version 4.0.2-dirty
    • ninja version 1.12.1
    • pkg-config version 2.4.3
    • OpenGL core renderer: Mesa Intel(R) UHD Graphics (CML GT2)
    • OpenGL core version: 4.6 (Core Profile) Mesa 25.0.5-arch1.1
    • OpenGL core shading language version: 4.60
    • OpenGL ES renderer: Mesa Intel(R) UHD Graphics (CML GT2)
    • OpenGL ES version: OpenGL ES 3.2 Mesa 25.0.5-arch1.1
    • OpenGL ES shading language version: OpenGL ES GLSL ES 3.20
    • GL_EXT_framebuffer_blit: yes
    • GL_EXT_texture_format_BGRA8888: yes

[✓] Android Studio (version 2024.3.2) [181ms]
    • Android Studio at /home/kingwill101/.local/share/JetBrains/Toolbox/apps/android-studio
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • android-studio-dir = /home/kingwill101/.local/share/JetBrains/Toolbox/apps/android-studio
    • Java version OpenJDK Runtime Environment (build 21.0.6+-13368085-b895.109)

[✓] IntelliJ IDEA Ultimate Edition (version 2025.1) [179ms]
    • IntelliJ at /home/kingwill101/.local/share/JetBrains/Toolbox/apps/intellij-idea-ultimate-2
    • Flutter plugin version 85.3.2
    • Dart plugin version 251.25410.28

[✓] Connected device (2 available) [229ms]
    • Linux (desktop) • linux  • linux-x64      • Manjaro Linux 6.12.28-1-MANJARO
    • Chrome (web)    • chrome • web-javascript • Chromium 136.0.7103.113 Arch Linux

[✓] Network resources [527ms]
    • All expected network resources are available.

• No issues found!

Description

Attempting to configure a project leads to the error type 'Null' is not a subtype of type 'String' in type cast

flutterfire configure --project=.....
i Found 1 Firebase projects. Selecting project ......
✔ Which platforms should your configuration support (use arrow keys & space to select)? · android, ios, macos, web, windows
⠹ Fetching registered android Firebase apps for project ......
type 'Null' is not a subtype of type 'String' in type cast

Steps to reproduce

1. flutterfire configure ...

Expected behavior

configures the project correctly

Screenshots

No response

Additional context and comments

No response

[russellwheatley]

@kingwill101 - it seems like you're developing on linux, apple writes only happen on a macOS: https://github.com/invertase/flutterfire_cli/blob/main/packages/flutterfire_cli/lib/src/commands/config.dart#L656-L690

[stMerlHin]

I'm on Linux too and I had the same problem. I spent last night trying to find the cause of the bug and I found it. I fixed the problem on my side. It's related to the way flutterfire_cli checks if a firebase command was executed successfully or not coupled with the fact that exitCode of Process.run is 2 for no apparent reason.