LONG >> Blocking issue while doing HCM

Observed a blocking issue while doing HCM on company LONG.

on Carrier integration URL, while applying job using linkedin credentials, server error occurred on Job Application popup. PFA screen shot and error log

URL:
https://stage.workterra.net/Recruit/PublicCareerOpeningIntegration/PublicCareerOpeningIntegration?Parameter1=KwaSe%2bMzzuM%3d&Parameter2=t1oe9Xi3yHw%3d

Exception : Object Graph cannot be null.Parameter name: graph
App Error Log : ControllerAppTier.GetData->WORKTERRAControllerAppTier.GetData->EmployeeFormBuilder.GetData->EmployeeFormBuilder.GetVerificationRequiredFlag->Serialization.SerializeBinary
Employee ID : 0
Action Name : EmployeeFormBuilder
Model : System.Web.Mvc.HandleErrorInfo
Controller : Customization
Web Error Log : at WORKTERRA.Shared.WORKTERRAControllerWebTier.GetData(ObjectType I_objectType, Hashtable I_criteria, Object I_context, Boolean I_mode, Boolean I_needCollection)
at WORKTERRA.Shared.Areas.Customization.Models.EmployeeFormBuilderModel.GetVerificationRequiredFlag(Int32 PageID)
at WORKTERRA.Shared.Areas.Customization.Controllers.CustomizationController.EmployeeFormBuilder(String PageId, Int32 FormType, Boolean IsFromRecruit, Int32 JobID, String AffidavitParam)
at lambda_method(Closure , ControllerBase , Object[] )
at System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters)
at System.Web.Mvc.ControllerActionInvoker.<>c_DisplayClass13.b_10()
at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters)
at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)

CC: Sonali Punse Vijayendra Shinde