Upload failed You need to use a different version code for your APK because you already have one with version code 2

Question

According to this answer How to solve "Your APK's version code needs to be higher than 2." in Google Play's Developer Console? I have just changed the vers

Answer 1

android:versionCode="28"

Your previous versionCode was 28. You should increment it by 1 to 29.

android:versionCode="29"

Presumably, your previous app versions were 1 through 28. By releasing with versionCode 3, you are conflicting with a previous version of your app that was already released with this versionCode.