Why is the signature invalid when uploading an apk?

Question

Android

When trying to upload an apk file to the Google Play Console, it gives the following error: Error from the apksigner tool: ERROR: MIN_SIG_SCHEME_FOR_TARGET_SDK_NOT_MET: Target SDK version 30 requires a minimum of signature scheme v2; the APK is not signed with this or a later signature scheme.
Actually, I already created the key, changed the key store. How to fix this problem?

Answer 1

When signing an apk, you need to check the box for v2 at the last step "Generate Signed apk".