Flutter Firebase错误(任务':app:mergeExtDexDebug'的执行失败)

我是编程新手，对flutter和firebase还是新手.我正在尝试使用此代码( https://github.com/tattwei46/flutter_login_demo )，但是我遇到了一个错误.一切都应该相同，只是我更改了google-service.json和GoogleService.plist使其与我的Firebase应用程序匹配，并且我编辑了home-page.dart.这是打印出来的内容:

I'm new to programming, and I'm very new to flutter and firebase. I'm experimenting with this code (https://github.com/tattwei46/flutter_login_demo), but I've run into an error. Everything should be the same except I changed the google-service.json and GoogleService.plist to match up with my firebase apps, and I edited home-page.dart. Here is what was printed out:

AGPBI:{:错误"，文本":类型com.google.android.gms.common.internal.zzf被引用为来自 com.google.android.gms的接口.internal.zzcfb .，"源:[{}]，"工具:" D8}

AGPBI: {"kind":"error","text":"Type com.google.android.gms.common.internal.zzf is referenced as an interface from com.google.android.gms.internal.zzcfb.","sources":[{}],"tool":"D8"}

失败:构建失败，并出现异常.

FAILURE: Build failed with an exception.

• 出了什么问题:任务':app:mergeExtDexDebug'的执行失败.

• What went wrong: Execution failed for task ':app:mergeExtDexDebug'.

无法解析配置':app:debugRuntimeClasspath'的所有文件.无法转换工件'firebase-analytics-impl.aar(com.google.firebase:firebase-analytics-impl:11.4.2)'以匹配属性{artifactType = android-dex，dexing-enable-desugaring = true，dexing-is-debuggable = true，dexing-min-sdk = 16}.DexingWithClasspathTransform的执行失败:/Users/student/.gradle/caches/transforms-2/files-2.1/cfad2a10e4239993e5e793d023977752/jetified-firebase-analytics-impl-11.4.2/jars/classes.jar.删除时出错.

Could not resolve all files for configuration ':app:debugRuntimeClasspath'. Failed to transform artifact 'firebase-analytics-impl.aar (com.google.firebase:firebase-analytics-impl:11.4.2)' to match attributes {artifactType=android-dex, dexing-enable-desugaring=true, dexing-is-debuggable=true, dexing-min-sdk=16}. Execution failed for DexingWithClasspathTransform: /Users/student/.gradle/caches/transforms-2/files-2.1/cfad2a10e4239993e5e793d023977752/jetified-firebase-analytics-impl-11.4.2/jars/classes.jar. Error while dexing.