Allowing access to phone's camera and mic
To use Overlays, you'll need to stream from your phone. When you first visit your Overlay URL from your phone, you'll be prompted to grant access to the phone's camera and mic.
If you accidentally deny access, you'll get an error when you go to your sold.as/live URL.
To resolve, you'll have to grant access to the camera and mic. If you're using Safari on an iPhone, see this article to change website preferences. If you're using Chrome on Android, see this article to change a site's camera and microphone permissions.