./gradlew :app:assembleDebug
Type-safe project accessors is an incubating feature.

FAILURE: Build failed with an exception.

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

Failed to notify project evaluation listener.
'java.lang.String com.android.build.gradle.internal.component.ComponentCreationConfig.computeTaskName(java.lang.String, java.lang.String)'
'java.lang.String com.android.build.gradle.internal.component.ComponentCreationConfig.computeTaskName(java.lang.String, java.lang.String)'

why?