NetworkServer.Spawn() make client crash to desktop when called in a loop

Hi everyone,

In my game, the world is generated server-side, so in my world generation script I have some loops to instantiate prefabs.

The problem is, when I call NetworkServer.Spawn in these loops, it makes the client crash to desktop (even when the client is in the editor). Here is a simple implementation exemple (code is server side) :

 void GeneratePlanets()
 {
    for (int i = 0; i < planetCount; i++)
    {
       Planet planet = Factory.CreatePlanet();
       NetworkServer.Spawn(planet.gameObject);
    }
 }

Here is another implementation I've tested :

 public class Factory : NetworkBehavior
 {
    List<GameObject> instanciatedObjects = new List<GameObject>();
 
    void Update()
    {
       // Spawn every object instanciated by the server on the last frame
       foreach (var item in instantiatedObjects)
          NetworkServer.Spawn(item);
 
       instanciatedObjects.Clear();
    }
 }

This is an exemple of implementation, I've tested many approaches but it fail everytime. Maybe I've missed something ?

Thanks in advance.