When upgrading your Live Broadcast Bundle from version 3.x to 4.x you'll lose the admin GUI web interface. This package has been decoupled and moved to https://github.com/Martin1982/live-broadcast-sonata-admin-bundle
To fix this, it is recommended to change to this new bundle package;
composer require martin1982/live-broadcast-sonata-admin-bundle composer remove martin1982/live-broadcast-bundle
You should now have the Sonata admin together with the bundle as it is a dependency. All other configurations will stay the same.