问题
From the run terminal of android studio:
FAILURE: Build failed with an exception.
- Where: Script 'C:\Flutter\src\flutter\packages\flutter_tools\gradle\flutter.gradle' line: 362 
- What went wrong: A problem occurred configuring project ':cloud_firestore_web'. 
Could not find method implementation() for arguments [project ':firebase_core'] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.
- 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.
Similar issue with firebase_auth.
回答1:
Had a similar problem recently, here are the steps that fixed it for me.
- Run flutter pub upgrade to upgrade all the Firebase plugins to the latest versions. 
- Use the steps at https://firebase.flutter.dev/docs/migration to check for any deprecated code. 
- In the android/build.gradle file, make sure the google services dependency is - classpath 'com.google.gms:google-services:4.3.3'or whatever the latest version is.
- In the android/app/build.gradle file, if you have any dependencies of the form - implementation 'com.google.firebase:[firebase-product:version-number]then get rid of those lines
- Run flutter clean 
来源:https://stackoverflow.com/questions/63595675/build-failing-with-an-exception-when-adding-firebase-auth-or-cloud-firestore-in