Able to join Lobby but not creating room?

Hi, I have just started learning integrating Photon into my game but I have run into a weird problem. My debug log shows that I have connected to Photon and joined the Lobby. But when the code tries to create a room, OnCreatedRoom function is never called nor did I ever get a failed response from the Photon Server. Does anyone have any idea what is this about?

I am using Photon Classic on Unity 2018.3.6f1 Personal.

Here is the error.

Before anyone ask, the first 2 NullReferenceException has nothing to do with Photon.

CreateRoom.cs

using TMPro;
using UnityEngine;

public class CreateRoom : MonoBehaviour
{
    [SerializeField]
    private TMP_InputField _roomName;
    private TMP_InputField RoomName
    {
        get { return _roomName; }
    }




    public void OnClick_CreateRoom()
    {
    RoomOptions roomOptions = new RoomOptions() { IsVisible = true, IsOpen = true, MaxPlayers = 4 };

        if (PhotonNetwork.CreateRoom(RoomName.text, roomOptions, TypedLobby.Default))
        {
            Debug.Log("Successfully sent create room message: " + RoomName.text);
            //PhotonNetwork.JoinRoom(RoomName.text);
            //PhotonNetwork.JoinOrCreateRoom(RoomName.text, roomOptions, TypedLobby.Default);
        }
        else
        {
            Debug.Log("Failed sending create room message.");
        }
    }

    private void OnPhotonCreateRoomFailed(object[] codeAndMessage)
    {
        Debug.Log("Failed creating room: " + codeAndMessage[1]);
    }

    private void OnCreatedRoom()
    {
        Debug.Log("Room created successfully");
    }
}

LobbyNetwork.cs

using UnityEngine;

public class LobbyNetwork : MonoBehaviour
{
    void Start()
    {
        Debug.Log("Connecting to server");
        PhotonNetwork.ConnectUsingSettings("1.0");
    }

    public void OnConnectedToPhoton()
    {
        Debug.Log("Connected to Photon.");
    }

    private void OnConnectedToMaster()
    {
        Debug.Log("Connected to master");
        PhotonNetwork.playerName = PlayerNetwork.Instance.PlayerName;

        PhotonNetwork.JoinLobby(TypedLobby.Default);
    }

    private void OnJoinedLobby()
    {
        Debug.Log("Joined Lobby");
    }
}