A problem occurred configuring project ':cloud_firestore'.

[cybercoup7]

I'm trying to use the firestore plugin but this is the error I'm getting. someone please help.

FAILURE: Build failed with an exception.

• What went wrong:
  A problem occurred configuring project ':cloud_firestore'.

Could not load compiled classes for build file 'C:\Users\mwana\AppData\Local\Pub\Cache\hosted\pub.dev\cloud_firestore-4.9.3\android\build.gradle' from cache.
Failed to notify project evaluation listener.
Could not get unknown property 'android' for project ':cloud_firestore' of type org.gradle.api.Project.
Could not find method implementation() for arguments [project ':firebase_core'] on object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler.
Could not get unknown property 'android' for project ':cloud_firestore' of type org.gradle.api.Project.

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BUILD FAILED in 1s
Exception: Gradle task assembleDebug failed with exit code 1