Please don't re-open unrelated tickets.
Applying changes to Google Play...
Upload failed: Unknown error: org.jenkinsci.plugins.googleplayandroidpublisher.PublisherApiException: com.google.api.client.googleapis.json.GoogleJsonResponseException: 401 Unauthorized
- No changes have been applied to the Google Play account
This error message most likely means that your Google Play service account doesn't have the correct permissions to publish alpha/beta APKs.