After upgrading from 2.0.2 to 2.1.0

[vengi83644]

ArgumentException: An item with the same key has already been added. Key: area
System.Collections.Generic.Dictionary<TKey, TValue>.TryInsert(TKey key, TValue value, InsertionBehavior behavior)
System.Collections.Generic.Dictionary<TKey, TValue>.Add(TKey key, TValue value)
OrchardCore.Mvc.ModularApplicationModelProvider.OnProvidersExecuted(ApplicationModelProviderContext context)
Microsoft.AspNetCore.Mvc.ApplicationModels.ApplicationModelFactory.CreateApplicationModel(IEnumerable controllerTypes)
Microsoft.AspNetCore.Mvc.ApplicationModels.ControllerActionDescriptorProvider.GetDescriptors()
Microsoft.AspNetCore.Mvc.ApplicationModels.ControllerActionDescriptorProvider.OnProvidersExecuting(ActionDescriptorProviderContext context)
Microsoft.AspNetCore.Mvc.Infrastructure.DefaultActionDescriptorCollectionProvider.UpdateCollection()
Microsoft.AspNetCore.Mvc.Infrastructure.DefaultActionDescriptorCollectionProvider.Initialize()
Microsoft.AspNetCore.Mvc.Infrastructure.DefaultActionDescriptorCollectionProvider.GetChangeToken()
Microsoft.Extensions.Primitives.ChangeToken.OnChange(Func changeTokenProducer, Action changeTokenConsumer)
Microsoft.AspNetCore.Mvc.Routing.ActionEndpointDataSourceBase.Subscribe()
Microsoft.AspNetCore.Builder.ControllerEndpointRouteBuilderExtensions.GetOrCreateDataSource(IEndpointRouteBuilder endpoints)
Microsoft.AspNetCore.Builder.ControllerEndpointRouteBuilderExtensions.MapDynamicControllerRoute(IEndpointRouteBuilder endpoints, string pattern, object state)
OrchardCore.HomeRoute.Startup.Configure(IApplicationBuilder app, IEndpointRouteBuilder routes, IServiceProvider serviceProvider)
OrchardCore.Modules.ShellPipelineExtensions.ConfigurePipelineAsync(ApplicationBuilder builder)
OrchardCore.Modules.ShellPipelineExtensions.BuildPipelineInternalAsync(ShellContext context)
System.Threading.Tasks.ValueTask.get_Result()
OrchardCore.Modules.ShellPipelineExtensions.BuildPipelineAsync(ShellContext context)
OrchardCore.Modules.ModularTenantRouterMiddleware.Invoke(HttpContext httpContext)
OrchardCore.Modules.ModularTenantContainerMiddleware+<>c__DisplayClass4_0+<b__0>d.MoveNext()
OrchardCore.Environment.Shell.Scope.ShellScope.UsingAsync(Func<ShellScope, Task> execute, bool activateShell)
OrchardCore.Environment.Shell.Scope.ShellScope.UsingAsync(Func<ShellScope, Task> execute, bool activateShell)
OrchardCore.Environment.Shell.Scope.ShellScope.UsingAsync(Func<ShellScope, Task> execute, bool activateShell)
OrchardCore.Environment.Shell.Scope.ShellScope.UsingAsync(Func<ShellScope, Task> execute, bool activateShell)
OrchardCore.Environment.Shell.Scope.ShellScope.UsingAsync(Func<ShellScope, Task> execute, bool activateShell)
OrchardCore.Modules.ModularTenantContainerMiddleware.Invoke(HttpContext httpContext)

[vengi83644]

ModularApplicationModelProvider is getting registered twice and executing twice. I don't know how to skip the 2nd execution.

[vengi83644]

[vengi83644]

Should we revert this change?

34c7a26#diff-1bd8ee3fbd1e9abc14263c17a474d79a01822330caf97c9be2a6f138b4f9a707L144

[vengi83644]

@hishamco

[vengi83644]

Sorry, Please ignore this bug. Let me close this.

The problem was I had called "AddOrchardCms" and had called "AddMvc" too. It was working for me until 2.0.2, since we had TryAdd.