Onboard- Signature control Issue

When we enter Signature in Signature control and input messy signature then while saving system prompts server message. system saves the password but before saving it prompts server message -

refer attached screenshot for details -

Error log -
Exception : Length of LOB data (121898) to be replicated exceeds configured maximum 65536.: @CName : [EmployeeSignature1441157],0InnerThe statement has been terminated.
App Error Log : ControllerAppTier.Save->WORKTERRAControllerAppTier.Save->EmployeeFormBuilder.Save->EmployeeFormBuilder.UpdateFormBuilderAttribute
Employee ID : 1537
Action Name : GetEmployeeFormBuilderInfo
Model : System.Web.Mvc.HandleErrorInfo
Controller : Customization
Web Error Log : at WORKTERRA.Shared.WORKTERRAControllerWebTier.Save(ObjectType I_objectType, Object objInputObject, Object I_context, Boolean I_mode)
at WORKTERRA.Shared.Areas.Customization.Models.EmployeeFormBuilderModel.UpdateFormBuilderAttribute(EmployeeData objEmployeeData, Int32 PageID, String PageTitle)
at WORKTERRA.Shared.Areas.Customization.Models.EmployeeFormBuilderModel.SaveAdditionalForm(EmployeeProfileModel objEmployeeFormBuilder, EmployeeData objEmployeeData)
at WORKTERRA.Shared.Areas.Customization.Controllers.CustomizationController.GetEmployeeFormBuilderInfo(EmployeeProfileModel objEmployeeFormBuilder)
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)