I've already done my code, uploaded it to Google Console, and the APK is in draft form. I made the instructions to make the draft into publication through the version creation screen, complete the frames and saved. When you click the Review button, the following error occurs, which is not documented anywhere: You must add a new APK or disable an existing APK to create a new version.
Update: I used the upload button, which says' Search for files' and I pointed to my release type APK, but the error message is' Upload failed You uploaded an APK with an invalid signature. Learn more about signatures. Apksigner error: ERROR: JAR_SIG_NO_SIGNATURES: No JAR signatures'