[InvalidOperationException: Sequence contains more than one element]
System.Linq.Enumerable.SingleOrDefault(IEnumerable`1 source) +6367528
System.Linq.Queryable.SingleOrDefault(IQueryable`1 source, Expression`1 predicate) +590
BusinessManagerEmail.Models.Repositories.ProvinciaRepository.GetId(String id) in C:\Progetti\E-CCOMY\BusinessManagerMail\Repositories\ProvinciaRepository.cs:67
BusinessManagerMail.Service.CategoriaService.getCategorieByProvincia(String strProvincia) in C:\Progetti\E-CCOMY\BusinessManagerMail\Service\CategoriaService.cs:35
FreeSocialMarket.Controllers.HomeController.Home(String idProvincia) in C:\Progetti\E-CCOMY\FreeSocialMarket\Controllers\HomeController.cs:2755
lambda_method(Closure , ControllerBase , Object[] ) +127
System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +248
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +39
System.Web.Mvc.<>c__DisplayClass15.<InvokeActionMethodWithFilters>b__12() +125
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +640
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +312
System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +691
System.Web.Mvc.Controller.ExecuteCore() +162
System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +305
System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__5() +62
System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +20
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +469
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +375
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