[1.188.105] Exception occured

2019-02-04 20:07:01.316 - Thread:   6 ->  Exception occured: System.NullReferenceException: Object reference not set to an instance of an object.
   at Sandbox.Game.Entities.Blocks.MyProjectorBase.BuildInternal(Vector3I cubeBlockPosition, Int64 owner, Int64 builder, Boolean requestInstant, Int64 builtBy)
   at lambda_method(Closure , MyProjectorBase , Vector3I , Int64 , Int64 , Boolean , Int64 , DBNull )
   at VRage.Network.CallSite`7.Invoke(BitStream stream, Object obj, Boolean validate)
   at VRage.Network.MyReplicationLayer.Invoke(CallSite callSite, BitStream stream, Object obj, EndpointId source, MyClientStateBase clientState, Boolean validate)
   at VRage.Network.MyReplicationServer.OnEvent(MyPacketDataBitStreamBase data, CallSite site, Object obj, IMyNetObject sendAs, Nullable`1 position, EndpointId source)
   at VRage.Network.MyReplicationLayer.OnEvent(MyPacketDataBitStreamBase data, NetworkId networkId, NetworkId blockedNetId, UInt32 eventId, EndpointId sender, Nullable`1 position)
   at VRage.Network.MyReplicationLayer.ProcessEvent(MyPacketDataBitStreamBase data, EndpointId sender)
   at VRage.Network.MyReplicationLayer.OnEvent(MyPacket packet)
   at Sandbox.Engine.Multiplayer.MyTransportLayer.ProcessMessage(MyPacket p)
   at Sandbox.Engine.Multiplayer.MyTransportLayer.HandleMessage(MyPacket p)
   at Sandbox.Engine.Networking.MyReceiveQueue.Process(NetworkMessageDelegate handler)
2019-02-04 20:07:01.316 - Thread:   6 ->  Packet processing error, disconnecting 76561198329709190

Working with projector cause disconnect and exception in dedicated server log.

After reconnection it happens again, until server will be restarted.