During the live stream, the live broadcast area shows a black screen, and the live stream footage cannot be displayed properly

If the user refuses the Flash request to use the camera and microphone, the live streaming area will go black. You can re-enter the live streaming room.
Step 1: Click the "lock" on the left side of the URL and select "Site settings".
Step 2: In the "Privacy and security settings", check the usage permissions for Flash, camera, and microphone as "Allow".