Hello I have a question I have all Build and Repair in a group and the Assempler also and with me all the time an error is thrown and I do not know how I can fix it


Caught exception during execution of script:Object reference not set to an instance of an object.
at Program.RepairSystemHandler.WeldPriorityList()
at Program.BuildAndRepairSystemQueuingGroupData.DisplayBlockWeldPriorityList(DisplayDefinition settings, StatusAndLogDisplay display)
at Program.BuildAndRepairSystemQueuingGroupData.RefreshDisplay(Double elapsedTime)
at Program.BuildAndRepairAutoQueuing.RefreshDisplays()
at Program.BuildAndRepairAutoQueuing.Handle()
at Program.Main(String arg)
at Sandbox.Game.Entities.Blocks.MyProgrammableBlock.<>c__DisplayClass42_0.<ExecuteCode>b__0(IMyGridProgram program)
at Sandbox.Game.Entities.Blocks.MyProgrammableBlock.RunSandboxedProgramActionCore(Action`1 action, String& response)