Could someone help with this error?
NullReferenceException: Object reference not set to an instance of an object
at DecoManager.OnWorldUnloaded () [0x00000] in <filename unknown>:0
at World.UnloadWorld (Boolean _bUnloadRespawnableEntities) [0x00000] in <filename unknown>:0
at GameManager.SaveAndCleanupWorld () [0x00000] in <filename unknown>:0
at ConnectionManager.DisconnectFromServer () [0x00000] in <filename unknown>:0
at ConnectionManager.Net_DisconnectedFromServer (System.String _reason) [0x00000] in <filename unknown>:0
at NetworkCommon.DisconnectedFromServerEv (System.String _msg) [0x00000] in <filename unknown>:0
at NetworkClientLiteNetLib.<Connect>m__1 (LiteNetLib.NetPeer _peer, DisconnectInfo _info) [0x00000] in <filename unknown>:0
at LiteNetLib.EventBasedNetListener.LiteNetLib.INetEventListener.OnPeerDisconnected (LiteNetLib.NetPeer peer, DisconnectInfo disconnectInfo) [0x00000] in <filename unknown>:0
at LiteNetLib.NetManager.ProcessEvent (LiteNetLib.NetEvent evt) [0x00000] in <filename unknown>:0
at LiteNetLib.NetManager.PollEvents () [0x00000] in <filename unknown>:0
at NetworkClientLiteNetLib.OnUpdate () [0x00000] in <filename unknown>:0
at (wrapper delegate-invoke) Steam/UpdateDelegate:invoke_void__this__ ()
at (wrapper delegate-invoke) Steam/UpdateDelegate:invoke_void__this__ ()
at (wrapper delegate-invoke) Steam/UpdateDelegate:invoke_void__this__ ()
at Steam.Update () [0x00000] in <filename unknown>:0
NullReferenceException: Object reference not set to an instance of an object
at DecoManager.OnWorldUnloaded () [0x00000] in <filename unknown>:0
at World.UnloadWorld (Boolean _bUnloadRespawnableEntities) [0x00000] in <filename unknown>:0
at GameManager.SaveAndCleanupWorld () [0x00000] in <filename unknown>:0
at ConnectionManager.DisconnectFromServer () [0x00000] in <filename unknown>:0
at ConnectionManager.Net_DisconnectedFromServer (System.String _reason) [0x00000] in <filename unknown>:0
at NetworkCommon.DisconnectedFromServerEv (System.String _msg) [0x00000] in <filename unknown>:0
at NetworkClientLiteNetLib.<Connect>m__1 (LiteNetLib.NetPeer _peer, DisconnectInfo _info) [0x00000] in <filename unknown>:0
at LiteNetLib.EventBasedNetListener.LiteNetLib.INetEventListener.OnPeerDisconnected (LiteNetLib.NetPeer peer, DisconnectInfo disconnectInfo) [0x00000] in <filename unknown>:0
at LiteNetLib.NetManager.ProcessEvent (LiteNetLib.NetEvent evt) [0x00000] in <filename unknown>:0
at LiteNetLib.NetManager.PollEvents () [0x00000] in <filename unknown>:0
at NetworkClientLiteNetLib.OnUpdate () [0x00000] in <filename unknown>:0
at (wrapper delegate-invoke) Steam/UpdateDelegate:invoke_void__this__ ()
at (wrapper delegate-invoke) Steam/UpdateDelegate:invoke_void__this__ ()
at (wrapper delegate-invoke) Steam/UpdateDelegate:invoke_void__this__ ()
at Steam.Update () [0x00000] in <filename unknown>:0