How do I delete a doble keystorage in my APK in Unity?

Hi, I'm trying to upload a VR game than I did with Unity, but when I uploaded didn't let me pass from the step 2 with the Dashboard, so I try with the commands but showed me this error.
Translation:
"ERROR: The apk was signed with signature Schema V1; however, it had previously been signed with V2 and re-signed with V1. This type of APK is considered damaged, so it cannot be installed."

So I don't know if I have to move my project to a new (In Unity) or there is a way to fix this mess with the keystore.