add log when broadcast is ignored

app/controllers/stream_notifications_controller.rb

@@ -65,6 +65,10 @@ class StreamNotificationsController < ApplicationController
       @broadcast = Broadcast.find_by(stream_uid: notification_object_id)
     end
 
+    if @broadcast.nil?
+      logger.info "Ignoring broadcast from other environment. Type = #{notification_type}. Id = #{live_stream_id} / #{notification_object_id}"
+      head :ok
+    end
     head :ok if @broadcast.nil?
   end