Value cannot be null Parameter name: virtualPath

[lakeba]

The following error happens just after Install-Package Swashbuckle.OData and the adding of c.CustomProvider(defaultProvider => new ODataSwaggerProvider(defaultProvider, c)); into my existing Swagger config file.

Any idea?

500 : {"Message":"An error has occurred.","ExceptionMessage":"Value cannot be null.\r\nParameter name: virtualPath","ExceptionType":"System.ArgumentNullException","StackTrace":" at System.Web.VirtualPath.Create(String virtualPath, VirtualPathOptions options)\r\n at System.Web.Hosting.MapPathBasedVirtualPathProvider.CacheLookupOrInsert(String virtualPath, Boolean isFile)\r\n at System.Web.Routing.RouteCollection.IsRouteToExistingFile(HttpContextBase httpContext)\r\n at System.Web.Routing.RouteCollection.GetRouteData(HttpContextBase httpContext)\r\n at System.Web.Http.WebHost.Routing.HostedHttpRouteCollection.GetRouteData(HttpRequestMessage request)\r\n at Swashbuckle.OData.Descriptions.SwaggerRouteStrategy.CreateHttpRequestMessage(HttpMethod httpMethod, Operation potentialOperation, String potentialPathTemplate, ODataRoute oDataRoute, HttpConfiguration httpConfig)\r\n at Swashbuckle.OData.Descriptions.SwaggerRouteStrategy.GetActionDescriptors(HttpMethod httpMethod, Operation potentialOperation, String potentialPathTemplate, ODataRoute oDataRoute, HttpConfiguration httpConfig)\r\n at Swashbuckle.OData.Descriptions.SwaggerRouteStrategy.GetActionDescriptors(SwaggerRoute potentialSwaggerRoute, HttpConfiguration httpConfig)\r\n at Swashbuckle.OData.Descriptions.SwaggerRouteStrategy.<>c__DisplayClass3_0.b__1(SwaggerRoute potentialSwaggerRoute)\r\n at System.Linq.Enumerable.d__162.MoveNext()\r\n at System.Linq.Enumerable.<SelectManyIterator>d__162.MoveNext()\r\n at System.Linq.Enumerable.d__162.MoveNext()\r\n at System.Linq.Enumerable.<DistinctIterator>d__631.MoveNext()\r\n at System.Collections.Generic.List1..ctor(IEnumerable1 collection)\r\n at System.Linq.Enumerable.ToList[TSource](IEnumerable1 source)\r\n at Swashbuckle.OData.CollectionExtentions.ToCollection[T](IEnumerable1 source)\r\n at Swashbuckle.OData.Descriptions.ODataApiExplorer.GetApiDescriptions()\r\n at System.Lazy1.CreateValue()\r\n at System.Lazy1.LazyInitValue()\r\n at Swashbuckle.OData.Descriptions.ODataApiExplorer.get_ApiDescriptions()\r\n at Swashbuckle.OData.ODataSwaggerProvider.GetApiDescriptionsFor(String apiVersion)\r\n at Swashbuckle.OData.ODataSwaggerProvider.GetSwagger(String rootUrl, String apiVersion)\r\n at Swashbuckle.Application.SwaggerDocsHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)\r\n at System.Net.Http.HttpMessageInvoker.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)\r\n at System.Web.Http.Dispatcher.HttpRoutingDispatcher.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)\r\n at System.Net.Http.DelegatingHandler.SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)\r\n at System.Web.Http.Owin.PassiveAuthenticationMessageHandler.d__0.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Web.Http.HttpServer.d__0.MoveNext()"} http://localhost/Easy.Docs.API/swagger/docs/v1

[ghost]

Hi @lakeba, please update to NuGet package v2.8.4 and retry. Let me know if you still have issues. Thanks!