Screenshot:

To resolve this error when uploading a build to your release in Play Console, you need to Add a privacy policy.
Just follow these steps:
- Open Play Console and go to the App content page (Policy and programs > App content).
- Under “Privacy Policy”, select Start.
- Note: If you’ve previously added a privacy policy and want to make changes, you’ll see and select Manage instead of Start.
- Enter your Privacy Policy URL.
- Save your changes.
Once done, the error should be resolved and the build will be successfully uploaded in your release track.
See screenshot:
