C# HostingEnvironment.QueueBackgroundWorkItem在Mono中引发InvalidOperationException

我正在将ASP.NET MVC 5应用程序从.NET Framework移植到Mono。
最后一个前沿是让HostingEnvironment.QueueBackgroundWorkItem工作

该应用程序在Apache mod_mono上运行，位于docker容器中

正如标题中所述，HostingEnvironment.QueueBackgroundWorkItem抛出InvalidOperationException。下面是完整的堆栈跟踪

  System.InvalidOperationException: Operation is not valid due to the current state of the object.
  at System.Web.Hosting.HostingEnvironment.QueueBackgroundWorkItem (System.Func`2[T,TResult] workItem) [0x00015] in <347f335902b24586a53361aa1278a360>:0 
  at System.Web.Hosting.HostingEnvironment.QueueBackgroundWorkItem (System.Action`1[T] workItem) [0x00005] in <347f335902b24586a53361aa1278a360>:0 
  at Ayyeka.Web.UI.Utils.DashboardModelBuilder.SaveModelToCache (Ayyeka.Web.UI.Models.AdminManagementModel model, System.UInt64 userId, System.String token) [0x00005] in <94931e6f7d3d48188e8c013f1bec6e2a>:0 
  at Ayyeka.Web.UI.Utils.DashboardModelBuilder.build (System.String userUiRole, System.UInt64 userId, System.String token, Ayyeka.Web.UI.BackendUser.User user, System.Boolean cacheModel) [0x004a1] in <94931e6f7d3d48188e8c013f1bec6e2a>:0 

System.InvalidOperationException:由于对象的当前状态，操作无效。
位于：0中的System.Web.Hosting.HostingEnvironment.QueueBackgroundWorkItem（System.Func`2[T，TResult]工作项）[0x00015]
位于：0中的System.Web.Hosting.HostingEnvironment.QueueBackgroundWorkItem（System.Action`1[T]workItem）[0x00005]
在Ayyeka.Web.UI.Utils.DashboardModelBuilder.SaveModelToCache（AYEKA.Web.UI.Models.AdminManagementModel模型，System.UInt64用户标识，System.String令牌）[0x00005]中：0
在Ayyeka.Web.UI.Utils.DashboardModelBuilder.build（System.String userUiRole，System.UInt64 userId，System.String token，Ayyeka.Web.UI.BackendUser.User，System.Boolean cacheModel）[0x004a1]中：0

我试图在mono源代码中跟踪错误，它可能归结为以下方法中的标记行：

public static void QueueBackgroundWorkItem(Func<CancellationToken, Task> workItem) {
    if (workItem == null) {
        throw new ArgumentNullException("workItem");
    }
    if (Host == null) {  // <------- HERE
        throw new InvalidOperationException(); // can only be called within an ASP.NET AppDomain
    }

    QueueBackgroundWorkItemInternal(workItem);
}

public static void QueueBackgroundWorkItem（Func workItem）{
if（workItem==null）{
抛出新ArgumentNullException（“工作项”）；
}
如果（主机==null）{//