‘Access-Control-Allow-Origin’ missing when uploading to YouTube API

Question

For several years we have successfully been uploading videos via the YouTube API using some custom JavaScript code. The code was based on some samples provided by Google (co

Answer 1

Google has fixed the problem and our long-standing code is back to working again without any changes.

Here is the tracked issue: https://issuetracker.google.com/issues/158718687