Question SceneOriginHandle is still zero but the NetworkObject is already spawned!

Hello everyone,

This has been cracking my head and I've ran out of ideas, even with the internet's help. I'm trying to add multiplayer to our game and currently I've hit a rock quite early.

Exception: GetSceneOriginHandle called when SceneOriginHandle is still zero but the NetworkObject is already spawned!

That is the error I get when I make a build, run it as a server and try to connect my editor to it as a client. The entrypoint is in the function StartClient():

Code (CSharp):

1. public class OnlineGUI : NetworkBehaviour
2. {
3.     [SerializeField] public GameObject prefab;
4.  
5.     void OnGUI()
6.     {
7.         GUILayout.BeginArea(new Rect(10, 10, 300, 300));
8.         if (!NetworkManager.Singleton.IsClient && !NetworkManager.Singleton.IsServer)
9.         {
10.             StartButtons();
11.         }
12.         else
13.         {
14.             StatusLabels();
15.         }
16.  
17.         GUILayout.EndArea();
18.     }
19.  
20.     void StartButtons()
21.     {
22.         if (GUILayout.Button("Host")) NetworkManager.Singleton.StartHost();
23.         if (GUILayout.Button("Client")) StartClient();
24.         if (GUILayout.Button("Server")) NetworkManager.Singleton.StartServer();
25.     }
26.  
27.     static void StatusLabels()
28.     {
29.         var mode = NetworkManager.Singleton.IsHost ?
30.             "Host" : NetworkManager.Singleton.IsServer ? "Server" : "Client";
31.  
32.         GUILayout.Label("Transport: " +
33.             NetworkManager.Singleton.NetworkConfig.NetworkTransport.GetType().Name);
34.         GUILayout.Label("Mode: " + mode);
35.     }
36.  
37.  
38.     void StartClient()
39.     {
40.         NetworkManager.Singleton.StartClient();
41.         SpawnPlayerCharacterServerRpc();
42.     }
43.  
44.  
45. public override void OnNetworkSpawn()
46.     {
47.         SpawnPlayerCharacterServerRpc();
48.     }
49.  
50.     [ServerRpc(RequireOwnership = false)]
51.     void SpawnPlayerCharacterServerRpc()
52.     {
53.         GameObject go = Instantiate(prefab, new Vector3(-6.0f, 0.5002056f, 0.0f), Quaternion.identity);
54.         go.GetComponent<NetworkObject>().Spawn();
55.     }
56.  
57.  

I have also tried allowing for it to be the NetworkManager to spawn a selected player prefab, but the error remains. Any ideas or suggestions? Thanks!

 

Hey,

For anyone with this issue, this happened because I started my server on the awake function...I do not recommend that!
Closing this.