title: getVariantManager error with DexProtector
body: <p>After I update the classpath to 4.2.1 'com.android.tools.build:gradle:4.2.1'</p>
  <p><a href="https://i.stack.imgur.com/WRtNJ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/WRtNJ.png" alt="enter image description here" /></a></p>