SaveChangesAsync: Value cannot be null parameter name: source (EntityHistory) #8042

carelearning created 5 years ago

Dear Abp Represenative,

We encountered an issue while upgrading Abp NuGet packages from 4.9.0 to 4.10.0.

We are using the "ASP.NET MVC 5.x, Web API and AngularJS 1.x based Single-Page Application (SPA) solution."

After calling SaveChangesAsync on the CurrentUnitOfWork we get a "Value cannot be null Parameter name: source" exception (please reference included screenshot).

Here is the stack trace:

at System.Linq.Enumerable.ToDictionary[TSource,TKey,TElement](IEnumerable`1 source, Func`2 keySelector, Func`2 elementSelector, IEqualityComparer`1 comparer)
 at Abp.EntityHistory.EntityHistoryHelper.GetRelationshipChanges(DbEntityEntry entityEntry, EntityType entityType, EntitySet entitySet, ICollection`1 relationshipChanges, Boolean auditedPropertiesOnly)
 at Abp.EntityHistory.EntityHistoryHelper.CreateEntityChangeSet(DbContext context)
 at Abp.Zero.EntityFramework.AbpZeroCommonDbContext`2.<SaveChangesAsync>d__104.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
 at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
 at Abp.EntityFramework.Uow.EfUnitOfWork.<SaveChangesInDbContextAsync>d__19.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
 at Abp.EntityFramework.Uow.EfUnitOfWork.<SaveChangesAsync>d__12.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
 at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
 at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
 at MyCompanyName.AbpZeroTemplate.Enrollment.EnrollmentAppService.<AddUserAsync>d__63.MoveNext() in c:\projects\port\src\careLearning\MyCompanyName.AbpZeroTemplate.Application\Enrollment\EnrollmentAppService.cs:line 934

Our work around is to disable the EntityHistory feature outlined here https://aspnetboilerplate.com/Pages/Documents/Entity-History.

This is a FYI for anyone else who may experience the issue.

2 Answer(s)