8.0.3 fails with error Value cannot be null. (Parameter 'structuredType') . May be because Autoexpand and EnableQuery Conflicts

Short summary (3-5 sentences) describing the issue.

If we use ENableQuery Attribute in our controller Action method defined as part of .netcore. Error comes that Value cannot be null. (Parameter 'structuredType') .
The reason seems Enable Query and AutoExpand are not working if both are present. in 8.0.3

Assemblies affected

*Which assemblies and versions are known to be affected microsoft.aspnetcore.odata\8.0.3\lib\netcoreapp3.1\Microsoft.AspNetCore.OData.dll

Reproduce steps

The simplest set of steps to reproduce the issue. If possible, reference a commit that demonstrates the issue.

We have an GttpGet action in the controller defined EnableQuery and it returns Ilist

Now if we remove the EnableQuery. The get operation works. Also if we remove [AutoExpand] expand attribute then also it works.

But we want to keep both attributes. The error which pops out is "Value cannot be null. (Parameter 'structuredType')"

We have below Contracts:

     public abstract class DataSource 
     {
        /// <summary>
        /// Gets or sets the ID of the item.
        /// </summary>
        [DataMember(Name = "id")]
        [ReadOnly(true)]
        public string Id { get; set; }

        /// <summary>
        /// Gets or sets name of the object.
        /// </summary>
        [DataMember(Name = "displayName")]
        public virtual string DisplayName { get; set; }

        /// <summary>
        /// Gets or sets the date/time when the item was created. It is read-only. The setter is for serialization purpose only.
        /// </summary>
        [DataMember(Name = "createdDateTime")]
        [ReadOnly(true)]
        public virtual DateTimeOffset CreatedDateTime { get; set; }
        /// <summary>
        /// Gets or sets odata id.
        /// </summary>
        [NotMapped]
        [DataMember(Name = "odata.id")]
        public Uri OdataId { get; set; }

        /// <summary>
        /// Gets or sets display name of this source.
        /// </summary>
        [DataMember(Name = "displayName")]
        [ReadOnly(true)]
        public override string DisplayName { get; set; }

        /// <summary>
        /// Gets or sets the time this entity was created.
        /// </summary>
        [DataMember(Name = "createdDateTime")]
        [ReadOnly(true)]
        public override DateTimeOffset CreatedDateTime { get; set; }

        /// <summary>
        /// Gets or sets the creator of this entity.
        /// </summary>
        [DataMember(Name = "createdBy")]
        [ReadOnly(true)]
        public IdentitySet CreatedBy { get; set; }

        /// <summary>
        /// Gets or sets the hold status of the dataSource within the case.
        /// </summary>
        [DataMember(Name = "holdStatus")]
        [ReadOnly(true)]
        public DataSourceHoldStatus HoldStatus { get; set; }
    }

    public class SiteSource : DataSource
    {
        /// <summary>
        /// Gets or sets site source.
        /// </summary>
        [DataMember(Name = "site")]
        [Required]
        [Contained]
        [AutoExpand]
        public Site Site { get; set; }
    }

    public class UnifiedGroupSource : DataSource
    {
        /// <summary>
        /// Gets or sets unified group for the data source.
        /// </summary>
        [DataMember(Name = "group")]
        [Required]
        [Contained]
        [AutoExpand]
        public Group Group { get; set; }

        /// <summary>
        /// Gets or sets types of source related to the group. Includes mailbox and site both by default.
        /// </summary>
        [DataMember(Name = "includedSources")]
        public SourceType? IncludedSources { get; set; }
    }

    public class UserSource : DataSource
    {
        /// <summary>
        /// Gets or sets user Source.
        /// </summary>
        [DataMember(Name = "email")]
        [Required]
        public string Email { get; set; }

        /// <summary>
        /// Gets or sets types of source related to the group. Includes mailbox and site both by default.
        /// </summary>
        [DataMember(Name = "includedSources")]
        public SourceType? IncludedSources { get; set; }

        /// <summary>
        /// Gets or sets the web url for site.
        /// </summary>
        [DataMember(Name = "siteWebUrl")]
        public string SiteWebUrl { get; set; }
    }

Expected result

What would happen if there wasn't a bug.
Action should return all the DataSOurces

Actual result

Throwing error. Value cannot be null.(Parameter 'structuredType'). Please refer call stack.

Additional detail

Call stack:
Value cannot be null. (Parameter 'structuredType')
at Microsoft.AspNetCore.OData.Edm.AutoSelectExpandHelper.GetAutoSelectPaths(IEdmModel edmModel, IEdmStructuredType structuredType, IEdmProperty pathProperty, ModelBoundQuerySettings querySettings)
at Microsoft.AspNetCore.OData.Query.SelectExpandQueryOption.GetAutoSelectExpandItems(IEdmEntityType baseEntityType, IEdmModel model, IEdmNavigationSource navigationSource, Boolean isAllSelected, ModelBoundQuerySettings modelBoundQuerySettings, Int32 depth, List1& autoSelectItems, List1& autoExpandItems)
at Microsoft.AspNetCore.OData.Query.SelectExpandQueryOption.ProcessLevels(ExpandedNavigationSelectItem expandItem, Int32 levelsMaxLiteralExpansionDepth, ModelBoundQuerySettings querySettings, Boolean& levelsEncounteredInExpand, Boolean& isMaxLevelInExpand)
at Microsoft.AspNetCore.OData.Query.SelectExpandQueryOption.ProcessLevels(IEnumerable`1 selectItems, Int32 levelsMaxLiteralExpansionDepth, ModelBoundQuerySettings querySettings, Boolean& levelsEncountered, Boolean& isMaxLevel)
at Microsoft.AspNetCore.OData.Query.SelectExpandQueryOption.ProcessLevels(SelectExpandClause selectExpandClause, Int32 levelsMaxLiteralExpansionDepth, ModelBoundQuerySettings querySettings, Boolean& levelsEncountered, Boolean& isMaxLevel)
at Microsoft.AspNetCore.OData.Query.SelectExpandQueryOption.ProcessLevels()
at Microsoft.AspNetCore.OData.Query.SelectExpandQueryOption.get_ProcessedSelectExpandClause()
at Microsoft.AspNetCore.OData.Query.ODataQueryOptions.ApplySelectExpand[T](T entity, ODataQuerySettings querySettings)
at Microsoft.AspNetCore.OData.Query.ODataQueryOptions.ApplyTo(IQueryable query, ODataQuerySettings querySettings)
at Microsoft.AspNetCore.OData.Query.EnableQueryAttribute.ApplyQuery(IQueryable queryable, ODataQueryOptions queryOptions)
at Microsoft.AspNetCore.OData.Query.EnableQueryAttribute.ExecuteQuery(Object responseValue, IQueryable singleResultCollection, ControllerActionDescriptor actionDescriptor, HttpRequest request)
at Microsoft.AspNetCore.OData.Query.EnableQueryAttribute.OnActionExecuted(ActionExecutedContext actionExecutedContext, Object responseValue, IQueryable singleResultCollection, ControllerActionDescriptor actionDescriptor, HttpRequest request)
at Microsoft.AspNetCore.OData.Query.EnableQueryAttribute.OnActionExecuted(ActionExecutedContext actionExecutedContext)
at Microsoft.AspNetCore.Mvc.Filters.ActionFilterAttribute.d__6.MoveNext() in //src/Mvc/Mvc.Core/src/Filters/ActionFilterAttribute.cs:line 51
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in //src/System.Private.CoreLib/shared/System/Runtime/ExceptionServices/ExceptionDispatchInfo.cs:line 63
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 180
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 151
at System.Runtime.CompilerServices.TaskAwaiter.GetResult() in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 107
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<g__Awaited|10_0>d.MoveNext() in //src/Mvc/Mvc.Core/src/Infrastructure/ControllerActionInvoker.cs:line 323
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in //src/System.Private.CoreLib/shared/System/Runtime/ExceptionServices/ExceptionDispatchInfo.cs:line 63
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Rethrow(ActionExecutedContextSealed context) in //src/Mvc/Mvc.Core/src/Infrastructure/ControllerActionInvoker.cs:line 509
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted) in //src/Mvc/Mvc.Core/src/Infrastructure/ControllerActionInvoker.cs:line 275
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<g__Awaited|13_0>d.MoveNext() in //src/Mvc/Mvc.Core/src/Infrastructure/ControllerActionInvoker.cs:line 487
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in //src/System.Private.CoreLib/shared/System/Runtime/ExceptionServices/ExceptionDispatchInfo.cs:line 63
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 180
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 151
at System.Runtime.CompilerServices.TaskAwaiter.GetResult() in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 107
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<g__Awaited|24_0>d.MoveNext() in //src/Mvc/Mvc.Core/src/Infrastructure/ResourceInvoker.cs:line 961
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in //src/System.Private.CoreLib/shared/System/Runtime/ExceptionServices/ExceptionDispatchInfo.cs:line 63
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResourceExecutedContextSealed context) in //src/Mvc/Mvc.Core/src/Infrastructure/ResourceInvoker.cs:line 1441
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted) in //src/Mvc/Mvc.Core/src/Infrastructure/ResourceInvoker.cs:line 878
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<g__Awaited|19_0>d.MoveNext() in //src/Mvc/Mvc.Core/src/Infrastructure/ResourceInvoker.cs:line 237
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in //src/System.Private.CoreLib/shared/System/Runtime/ExceptionServices/ExceptionDispatchInfo.cs:line 63
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 180
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 151
at System.Runtime.CompilerServices.TaskAwaiter.GetResult() in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 107
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<g__Logged|17_1>d.MoveNext() in //src/Mvc/Mvc.Core/src/Infrastructure/ResourceInvoker.cs:line 171
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in //src/System.Private.CoreLib/shared/System/Runtime/ExceptionServices/ExceptionDispatchInfo.cs:line 63
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 180
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 151
at System.Runtime.CompilerServices.TaskAwaiter.GetResult() in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 107
at Microsoft.AspNetCore.Routing.EndpointMiddleware.<g__AwaitRequestTask|6_0>d.MoveNext() in //src/Http/Routing/src/EndpointMiddleware.cs:line 79
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in //src/System.Private.CoreLib/shared/System/Runtime/ExceptionServices/ExceptionDispatchInfo.cs:line 63
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 180
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 151
at System.Runtime.CompilerServices.TaskAwaiter.GetResult() in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 107
at Microsoft.Compliance.EDiscovery.GraphService.Middleware.GwsForwardingMiddleware.d__3.MoveNext() in E:\src\microservices\eDiscoverySvc\sources\dev\Services\GraphService\src\Service\Middleware\GwsForwardingMiddleware.cs:line 51
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in //src/System.Private.CoreLib/shared/System/Runtime/ExceptionServices/ExceptionDispatchInfo.cs:line 63
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 180
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 151
at System.Runtime.CompilerServices.TaskAwaiter.GetResult() in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 107
at Microsoft.Compliance.EDiscovery.Common.Logging.TracingMiddleware.d__2.MoveNext() in E:\src\microservices\eDiscoverySvc\sources\dev\Common\Common\Logging\TracingMiddleware.cs:line 71
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in //src/System.Private.CoreLib/shared/System/Runtime/ExceptionServices/ExceptionDispatchInfo.cs:line 63
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 180
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 151
at System.Runtime.CompilerServices.TaskAwaiter.GetResult() in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 107
at Microsoft.Compliance.EDiscovery.Common.Auth.AuthenticationMiddleware.d__12.MoveNext() in E:\src\microservices\eDiscoverySvc\sources\dev\Common\Common\Auth\AuthenticationMiddleware.cs:line 125
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in //src/System.Private.CoreLib/shared/System/Runtime/ExceptionServices/ExceptionDispatchInfo.cs:line 63
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 180
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) in //src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 151
at System.Runtime.CompilerServices.TaskAwaiter.GetResult() in /_/src/System.Private.CoreLib/shared/System/Runtime/CompilerServices/TaskAwaiter.cs:line 107
at Microsoft.Compliance.EDiscovery.GraphService.Middleware.EgsExceptionMiddleware.d__3.MoveNext() in E:\src\microservices\eDiscoverySvc\sources\dev\Services\GraphService\src\Service\Middleware\EgsExceptionMiddleware.cs:line 44