Unable to upload app on Play console: Unoptimized apk

Guys, my apps are unable to publish in playstore. I always receive error " Invalid apk". why?

Are you uploading an apk?

If you are in fact uploading an APK make sure you are using the same package name you used with previous versions and that there are no other apps on the Play Store with the same package name.

Yes, i am uploading apk only

  1. I am uploading first time, so it is fresh app.
  2. I dont think so, i will still check package name

Your problem is different from this topic you posted here.

Create a new topic with all details and errors you getting while publishing your app.