Butterknife: Gradle sync error with gradle 3.0 and butterKinfe plugin 8.8.1 in library

[voiddog]

first set classpath in root project gradle

 dependencies {
        classpath 'com.android.tools.build:gradle:3.0.0'
        classpath "com.jakewharton:butterknife-gradle-plugin:8.8.1"
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
}

apply plugin in library module

apply plugin: 'com.jakewharton.butterknife'

dependencies {
     // butter knife
    implementation "com.jakewharton:butterknife:8.8.1"
    annotationProcessor "com.jakewharton:butterknife-compiler:8.8.1"
}

then I got gradle sync error:

---

Error:Unable to find method 'com.android.build.gradle.api.BaseVariant.getOutputs()Ljava/util/List;'.
Possible causes for this unexpected error include:

• Gradle's dependency cache may be corrupt (this sometimes occurs after a network connection timeout.)
  Re-download dependencies and sync project (requires network)
• The state of a Gradle build process (daemon) may be corrupt. Stopping all Gradle daemons may solve this problem.
  Stop Gradle build processes (requires restart)
• Your project may be using a third-party plugin which is not compatible with the other plugins in the project or the version of Gradle requested by the project.

In the case of corrupt Gradle processes, you can also try closing the IDE and then killing all Java processes.

[JakeWharton]

You'll have to use 9.0.0-SNAPSHOT for now.

[nkv09]

This is still not working.

[LonelyPluto]

when I user the 8.8.1 version,I have the same problem.