Upload new APK to Alpha - failed

Question

Upload new APK to Alpha

Upload failed

You uploaded an APK with an invalid signature (learn more about signing). Error from

Answer 1

You can see from the error that there is no jar signature.Select both the checkboxes for signature versions (v1 and v2) in last step and then build the apk. It will work

Answer 2

I was getting this error when I updated to android studio 3.3, the solution was remove the build folder, and then try again.