Resco - Arg_NullRefException

Hi,

I am facing an issue while loading "Work Order Inspection Tasks" on Resco Application, it is throwing Arg_NullReferenceException.

I have this WorkOrderInspection tasks Entity associated with my WO as below

And I have the WO and WO Inspection tasks entity enabled on resco, it doesn't matter whether I enable/Disable Entity on resco, every time it throws the same error.

Could anyone please help on what to debug and where, I am stuck here.