Update: Looks like this issue is isolated to Android and only a handful of specific cases. We're continuing to monitor reports to get this fixed!https://twitter.com/TeamYouTube/status/987041038844874752 …
Thanks for reaching out! Have you tried uninstalling the app updates, restarting your device and reinstalling the updates? Also, have you tried the steps mentioned in this Help Center article to troubleshoot your live stream: https://goo.gl/57L9se ? Keep us posted.