Issue with Gradle plugin 3.4.0 and gradle 5.1.1
A problem was found with the configuration of task ':app:processEditorDisabledDebugAndroidTestManifest'. > No value has been specified for property 'manifestOutputDirectory'.
Disabling the Gradle feature "Only sync the active variant".
In Android Studio: File > Settings > Experimental > Gradle => uncheck "Only sync the active variant" checkbox.