Uploading Android App Bundle to Google Play Console - key signing error

I am facing the same issues, in my case signingConfig was setup, I made one simple mistake, that I forget to change app debuggable to false. so even though I generated from menu or from gradle command, build was successfully generated but it was debuggable so play store not accepting signed apk and give me and message like Upload Failed The Android Bundle was not Signed in .

make sure to change app debuggable to false in build.gradle file