Failed to notify ProjectEvaluationListener.afterEvaluate(), but primary configuration failure takes precedence.
java.lang.IllegalStateException: buildToolsVersion is not specified.
at com.google.common.base.Preconditions.checkState(Preconditions.java:176)
at com.android.build.gradle.BasePlugin.createAndroidTasks(BasePlugin.java:600)
at com.android.build.gradle.BasePlugin$10$1.call(BasePlugin.java:566)
at com.android.build.gradle.BasePlugin$10$1.call(BasePlugin.java:563)
at com.android.builder.profile.ThreadRecorder$1.record(ThreadRecorder.java:55)
at com.android.builder.profile.ThreadRecorder$1.record(ThreadRecorder.java:47)
at com.android.build.gradle.BasePlugin$10.execute(BasePlugin.java:562)
at com.android.build.gradle.BasePlugin$10.execute(BasePlugin.java:559)
at org.gradle.internal.event.BroadcastDispatch$ActionInvocationHandler.dispatch(BroadcastDispatch.java:93)