Build Failed for Google VR project [4.20]

Project created in earlier versions of UE, is not packaging for Android ETC2 in UE4.20.

I am getting following errors:

I tried to package with smaller test project, and it produces the same errors.
Test project zip: [][2]

Has anybody encountered the same errors with 4.20?

Disabling “Enable Gradle instead of Ant” checkbox solves the problem. Thanks Epic support for this suggestion!