Server Error in '/' Application.

Validation failed for one or more entities. See 'EntityValidationErrors' property for more details.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Data.Entity.Validation.DbEntityValidationException: Validation failed for one or more entities. See 'EntityValidationErrors' property for more details.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[DbEntityValidationException: Validation failed for one or more entities. See 'EntityValidationErrors' property for more details.]
   System.Data.Entity.Internal.InternalContext.SaveChanges() +169
   System.Data.Entity.Internal.LazyInternalContext.SaveChanges() +27
   System.Data.Entity.DbContext.SaveChanges() +20
   UWebs.MvcApplication.Session_Start(Object sender, EventArgs e) in D:\Toan\Code\web200\web200\VNPTWebV2\UWebs\Global.asax.cs:121
   System.Web.SessionState.SessionStateModule.RaiseOnStart(EventArgs e) +10073956
   System.Web.SessionState.SessionStateModule.CompleteAcquireState() +165
   System.Web.SessionState.SessionStateModule.BeginAcquireState(Object source, EventArgs e, AsyncCallback cb, Object extraData) +1126
   System.Web.AsyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +297
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +50
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +163


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4110.0