The removal of FlutterJNI.getObservatoryUri in flutter/engine#38919 is breaking the espresso plugin: https://github.com/flutter/plugins/blob/main/packages/espresso/android/src/main/java/androidx/test/espresso/flutter/action/FlutterViewAction.java#L108

Fixed by flutter/engine#39035

Waiting for the PR above to land and roll into into flutter/flutter