Unable to build apk . Cannot set build path

Questions & Answers
1

I’m unsure what happened and can’t find similar problem.
I cannot set the build path if I didn’t check the “Build App bundle”.

So I can build AAB just fine, but if I uncheck that to get the apk and click build, Unity won’t let me to set path (no save as). And thus the build will failed with “invalid build path”.

Some notes:

  1. This is imported project from 2018.2 version
  2. Currently I’m using 2019.3 since 2018.2 won’t let me build aab which required by google
  3. I have tried to imported other simple project, and try to build.
    It works fine and let me set the build path.
  4. I’ve tried to set the player setting similar to new project but
    it’s still not let me set the build path
2

I change the folder to desktop and it allow me to build with no problem. Still unsure what makes me unable to build within project app. There are 2 apk output though, for 32 and 64 bit it seems. Maybe it’s connected to that.