RPC Function RpcSpawnCameras called on client.

Hi I have a setup where there is one server, and multiple clients which only displays things, so I'm configuring cameras on server, and send that data to clients via RPC so they can spawn right amount of cameras. Earlier I was using depreciated RPC function and it kinda works (sometimes it freezes) so I decided to move to newer network system but i'm getting that error "RPC Function RpcSpawnCameras called on client.". I tried if(isSerer), but this didn't help, there is no way that RpcSpawnCameras is called somewhere on client.

   void OnPlayerConnected(NetworkPlayer player)
     {
                 Spwan(player.ipAddress);
     }
 
     void Spwan(string ipAddress)
     {
         foreach (SaveToolbox.Slave s in SaveToolbox.Instance.slaves)
         {
             if (ipAddress.Equals(s.ip))
             {
                 foreach (SaveToolbox.Monitor m in SaveToolbox.Instance.monitors)
                 {
                     if (s.id == m.slaveID)
                         RpcSpawnCameras(ipAddress, m.displayID - 1, m.resolutionX, m.resolutionY);
                 }
                 break;
             }
         }
     }
 
     [ClientRpc]
     void RpcSpawnCameras(string target, int id, int resX, int resY)
     {
         if (target == Network.player.ipAddress)
         {
             GameObject camera = Instantiate(cameraPrefab) as GameObject;
             camera.GetComponent<Camera>().targetDisplay = id;
             Display.displays[id].Activate(Display.displays[1].systemWidth, Display.displays[1].systemHeight, 60);
             camera.transform.SetParent(cameraParent);
             camera.transform.localPosition = Vector3.zero;
             camera.transform.localEulerAngles = Vector3.zero;
         }
     }