Cannot Convert type UnityEngine.Networking.PlayerController to PlayerController

So i’m using the Lobby Manager that is on the asset store by Unity. And in the lobbymanager.cs script there is a problem that just occured to me. it’s not been there before and i dont know whats causing it. The error is in the title.
And it’s about this peice of code:

  //allow to handle the (+) button to add/remove player
    public void OnPlayersNumberModified(int count)
    {
        _playerNumber += count;

        int localPlayerCount = 0;
        foreach (PlayerController p in ClientScene.localPlayers)
            localPlayerCount += (p == null || p.playerControllerId == -1) ? 0 : 1;

        addPlayerButton.SetActive(localPlayerCount < maxPlayersPerConnection && _playerNumber < maxPlayers);
    }

My project is kindoff on hold atm because if this wich sucks.

Your error is telling you that you’re trying to convert Unity.Networking.PlayerController to a different type called PlayerController.

Have you got another script called PlayerController in your project, aside from the one in unity networking?