Having issues re-entering the lobby

I have a question about how to set up NetworkLobbyManager and the GameObject that hosts it. For my lobby scene, I added an empty object and dropped a NetworkLobbyManager on it. Then, I added a canvas below it to host my lobby UI. That worked fine and my game scene worked fine. Then, I made the following call to return to the lobby scene.

lobby.ServerReturnToLobby();

The lobby scene re-loaded and I saw the following warnings.


Having issues re-entering the lobby