cannot start Microsoft.Bot.Builder.Adapters.WeChat.TestBot solution

[vovanb]

Just took latest code from GitHub and can not run it in vs2019
receive below error:

Application startup exception: System.ArgumentNullException: Value cannot be null.
Parameter name: path1
   at System.IO.Path.Combine(String path1, String path2)
   at Microsoft.AspNetCore.Mvc.ApplicationParts.RelatedAssemblyAttribute.GetRelatedAssemblies(Assembly assembly, Boolean throwOnError, Func`2 fileExists, Func`2 loadFile)
   at Microsoft.AspNetCore.Mvc.ApplicationParts.RelatedAssemblyAttribute.GetRelatedAssemblies(Assembly assembly, Boolean throwOnError)
   at Microsoft.AspNetCore.Mvc.ApplicationParts.ApplicationAssembliesProvider.GetRelatedAssemblies(Assembly assembly)
   at Microsoft.AspNetCore.Mvc.ApplicationParts.ApplicationAssembliesProvider.GetAssemblyItem(Assembly assembly)
   at Microsoft.AspNetCore.Mvc.ApplicationParts.ApplicationAssembliesProvider.ResolveFromDependencyContext(DependencyContext dependencyContext)
   at Microsoft.AspNetCore.Mvc.ApplicationParts.ApplicationAssembliesProvider.ResolveAssemblies(Assembly entryAssembly)+MoveNext()
   at Microsoft.AspNetCore.Mvc.ApplicationParts.ApplicationPartManager.PopulateDefaultParts(String entryAssemblyName)
   at Microsoft.Extensions.DependencyInjection.MvcCoreServiceCollectionExtensions.GetApplicationPartManager(IServiceCollection services)
   at Microsoft.Extensions.DependencyInjection.MvcCoreServiceCollectionExtensions.AddMvcCore(IServiceCollection services)
   at Microsoft.Extensions.DependencyInjection.MvcServiceCollectionExtensions.AddMvc(IServiceCollection services)
   at Microsoft.Bot.Builder.Adapters.WeChat.TestBot.Startup.ConfigureServices(IServiceCollection services) in MSBotAdapters\BotFramework-WeChat-master\samples\csharp_dotnetcore\Microsoft.Bot.Builder.Adapters.WeChat.TestBot\Startup.cs:line 27
--- End of stack trace from previous location where exception was thrown ---
   at Microsoft.AspNetCore.Hosting.ConventionBasedStartup.ConfigureServices(IServiceCollection services)
   at Microsoft.AspNetCore.Hosting.Internal.WebHost.EnsureApplicationServices()
   at Microsoft.AspNetCore.Hosting.Internal.WebHost.Initialize()
--- End of stack trace from previous location where exception was thrown ---
   at Microsoft.AspNetCore.Hosting.Internal.WebHost.BuildApplication()
crit: Microsoft.AspNetCore.Hosting.Internal.WebHost[6]
      Application startup exception
System.ArgumentNullException: Value cannot be null.
Parameter name: path1
   at System.IO.Path.Combine(String path1, String path2)

In addition exist warning that The target framework 'netcoreapp2.2' is out of support . I have seen #55 , but it seems not in main repository still....

[vovanb]

@timenick any chance to help?