Good day.
This is a browser warning. Since Chrome 71, content
autoplay policy was changed. Now, user has to do something to start video playback on web page, to press a key for example. The policy change affects also audiocontext creation that is needed to play a sound. According to new policy, audiocontext may only be created as response to some user action.
So the btrowser displays this warning when you try to play a stream on page load. A viwer shouls click a button to unmute playback, for example a standard unmute control.