According to this SO issue:
This bug happens when the versions of SDK, Build Tools and Gradle
Plugins doesn't match (in terms of compatibility). The solutions is
verify if you is using the latest versions of them. The gradle plugins
are placed in the build.gradle of the project, and the other versions
are on the build.gradle of the module. For example, for SDK 23, you
must use the Build Tools 23.0.1 and gradle plugins version 1.3.1.
You're using already newer 23.0.3
build tools so please check if your Gradle plugin is at least in '1.3.0' version
Try to use classpath 'com.android.tools.build:gradle:1.5.1'