firebase - 如何修复 'processorListFile' 不存在。在 flutter 中构建 appbundle 时

Question

失败:构建失败，出现异常
Firebase admob 在我的 Flutter 应用程序中运行正常，但是在运行 build appbundle --release 时出现如下错误:

错误输出

PS D:\Projects\new\kjv_bible> flutter build appbundle --release
Running Gradle task 'bundleRelease'...

FAILURE: Build failed with an exception.

* What went wrong:
A problem was found with the configuration of task ':firebase_core_web:compileReleaseJavaWithJavac'.
> File 'D:\Projects\new\kjv_bible\build\firebase_core_web\intermediates\annotation_processor_list\release\annotationProcessors.json' specified for property 'processorListFile' does not exist.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 3m 26s
Running Gradle task 'bundleRelease'...
Running Gradle task 'bundleRelease'... Done                       209.8s (!)
Gradle task bundleRelease failed with exit code 1

flutter 医生
运行 flutter doctor并粘贴下面的输出:

[√] Flutter (Channel stable, v1.12.13+hotfix.9, on Microsoft Windows [Version 10.0.18363.720], locale en-US)
    • Flutter version 1.12.13+hotfix.9 at C:\src\flutter
    • Framework revision f139b11009 (4 weeks ago), 2020-03-30 13:57:30 -0700
    • Engine revision af51afceb8
    • Dart version 2.7.2

[!] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
    • Android SDK at C:\Users\ljoe0\AppData\Local\Android\sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-29, build-tools 29.0.3
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b04)
    X Android license status unknown.
      Try re-installing or updating your Android SDK Manager.
      See https://developer.android.com/studio/#downloads or visit https://flutter.dev/setup/#android-setup for detailed
      instructions.

[√] Android Studio (version 3.6)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin version 45.0.1
    • Dart plugin version 192.7761
    • Java version OpenJDK Runtime Environment (build 1.8.0_212-release-1586-b04)

[√] VS Code, 64-bit edition (version 1.44.2)
    • VS Code at C:\Program Files\Microsoft VS Code
    • Flutter extension version 3.9.1

[!] Connected device
    ! No devices available

! Doctor found issues in 2 categories.

我在 pubspec.yaml 中添加了 Firebase_core，但仍然出现相同的错误。
我用谷歌搜索了这个错误几个小时，但无济于事。
请问这个错误会出什么问题？

Answer 1

正如 op 本人在评论中所说，删除 .gradle文件夹解决了这个问题。