谁能帮我找到“未设置对象引用”例外?

| Traces.svclog 这是我试图捕获空引用异常的服务跟踪文件。从堆栈跟踪中可以看到,此异常发生在ѭ0命名空间内。我可以在web.Config中进行一些更改,以使我能够跟踪此异常的原因吗?我很茫然。我当前正在使用此诊断配置。     
已邀请:
        在服务器上,我通过对它调用\'AsEnumerable \'将LINQ to SQL查询转换为\'IEnumerable \'。然后,我将其投影到POCO / DTO中,然后通过调用\'AsQueryable \'将其转换回\'IQueryable \'。之所以这样做,是因为我针对查询所做的某些事情无法针对IQueryable完成(它们无法转换为SQL)。当我拿出它时,它工作正常。我仍然想知道为什么它崩溃了。
    [ProjectManagerAuthorization]
    public IQueryable<ProjectSummary> GetMachiningProjects()
    {
        var ret = (from project in _dataContext.DAProjects
                   where project.Status == \"purchased\" ||
                       project.Status == \"ready\" ||
                       project.Status == \"machining\" ||
                       project.Status == \"onhold\" ||
                       project.Status == \"machined\"
                   select project).AsEnumerable();

        return (from project in ret
                select new ProjectSummary
                {
                    ID = GetProjectID(project),
                    ProjectNumber = project.ProjectNumber,
                    StoreNumber = project.StoreNumber,
                    ProjectName = project.ProjectName,
                    OwnerEmail = project.OwnerEmail,
                    SheetQuantity = project.SheetQuantity ?? 0.0f,
                    EdgeLength = project.EdgeLength ?? 0.0f,
                    Price = project.Price ?? 0.0m,
                    SheetMaterialDescription = GetProjectSheetStockDescription(project),
                    BandingMaterialDescription = GetProjectBandingStockDescription(project),
                    Status = (ProjectStatus)Enum.Parse(typeof(ProjectStatus), project.Status, true),
                    SubmitDate = UtcNormalizeDateTime(project.SubmitDate),
                    PurchaseDate = UtcNormalizeDateTime(project.PurchaseDate),
                    UsingQueuedMachine = true,
                    QueuedMachineID = project.QueuedMachineID,
                    QueuedMachineOrder = LookupQueuedMachineOrder(project)
                }).AsQueryable();

    }
    

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