Employbridge - Employee login - Employee elction page - getting server error on clicking i do not want to make changes button

baker08151969
Password@1
Employbridge

Error log-
Exception : startIndex cannot be larger than length of string.Parameter name: startIndex
App Error Log : -
Employee ID : 315287
Action Name : FlexibleBenefits
Model : System.Web.Mvc.HandleErrorInfo
Controller : UserDetails
Web Error Log : at System.String.Substring(Int32 startIndex, Int32 length)
at WORKTERRA.BenAdmin.Areas.UserDetails.Models.FlexibleBenefitsModel.populateFlexibleBenefits()
at WORKTERRA.BenAdmin.Areas.UserDetails.Controllers.UserDetailsController.FlexibleBenefits()
at lambda_method(Closure , ControllerBase , Object[] )
at System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters)
at System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters)strong text