android build "could not encode class bundle"

[Mike Kerner]

android n00b, here.
i'm trying to do a build for android.
The error i'm getting is
could not encode class bundle - error
Methods with invalid locals information:
  void
androidx.print.PrintHelper$PrintUrlAdapter$1.onPostExecute(android.graphics.bitmap)
it continues, but I can't find a reference to that error in any of the LC
stuff.

-- 
On the first day, God created the heavens and the Earth
On the second day, God created the oceans.
On the third day, God put the animals on hold for a few hours,
   and did a little diving.
And God said, "This is good."