api.BaseVariant.getOutputs()Ljava/util/List异常

近期在用Android Studio3.0开发中过程中使用了Butterknife 8.8.1的版本，出现了如下的异常:

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.

造成此问题的原因是Android Studio 3.0和Butterknife的新版本存在冲突，解决方法是将Butterknife 8.8.1版本换成8.4.0版本。