ASP.NET Core 2.2 Web API Angular. Hosting provider says 500 - Internal server error

Question

I am trying to publish ASP.NET Core 2.2 Web API and Angular 8 project with a hosting provider SmarterASP.NET that supports ASP.NET Core. However, I am getting the following error:

500 - Internal server error. There is a problem with the resource you are looking for, and it cannot be displayed.

However, the project works perfectly if I start it locally.

I searched through the Internet and various forums and see this question, another one question and this github post.

This is my Main method:

public class Program
{
    public static void Main(string[] args)
    {
        var host = CreateWebHostBuilder(args).Build();
        WebHost.CreateDefaultBuilder(args)
            .UseSetting(WebHostDefaults.DetailedErrorsKey, "true");

        host.Run();
    }
}

This is my Configure() of StartUp class:

public void Configure(IApplicationBuilder app, IHostingEnvironment env, 
    IServiceProvider provider)
{
    if (env.IsDevelopment())
    {
        app.UseDeveloperExceptionPage();
    }
    else
    {
        app.UseHsts();
    }       
    app.Use(async (context, next) =>
    {
        await next();
        if (context.Response.StatusCode == 404 && 
            !Path.HasExtension(context.Request.Path.Value))
        {
            context.Request.Path = "/index.html";
            await next();
        }
    });     
    app.ConfigureCustomExceptionMiddleware();
    app.UseCors("ApiCorsPolicy");
    app.UseDefaultFiles();
    app.UseStaticFiles();
    app.UseStaticFiles(new StaticFileOptions()
    {
        FileProvider = new PhysicalFileProvider(
            Path.Combine(Directory.GetCurrentDirectory(), @"StaticFiles")),
            RequestPath = new PathString("/StaticFiles")
    });
    app.UseHttpsRedirection();
    app.UseAuthentication();
    app.UseMvc();
    app.UseDeveloperExceptionPage();
}

And this is my web.config file:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <location path="." inheritInChildApplications="false">
    <system.webServer>
      <httpErrors errorMode="Detailed" />
      <aspNetCore processPath="dotnet">
      <environmentVariables>
           <environmentVariable name="ASPNETCORE_DETAILEDERRORS" value="true" />
           </environmentVariables>
      </aspNetCore>
      <handlers>
        <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModuleV2" 
            resourceType="Unspecified" />
      </handlers>
      <aspNetCore processPath="dotnet" arguments=".\fooappl.dll" stdoutLogEnabled="true" 
          stdoutLogFile=".\logs\stdout" hostingModel="InProcess" />
    </system.webServer>
  </location>
  <system.web>
    <customErrors mode="Off"/>
  </system.web>
</configuration>
<!--ProjectGuid: 25e0e882-c3ff-4f8d-98cc-f26a692fa019-->

I've created folders logs\stdout, however, logs file were not created.

I am little bit stuck. Could you say what am I doing wrong?

Answer 1

I've managed to deploy my application! Maybe it will help to others.

So my mistakes were:

1. Not correct web.config. Thanks to guys from SmarterAsp.Net! This is the correct web.config which shows detailed error:

   <?xml version="1.0" encoding="utf-8"?>
   <configuration>
       <location path="." inheritInChildApplications="false">
       <system.webServer>
           <handlers>
               <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModuleV2" 
                   resourceType="Unspecified" />
           </handlers>
           <aspNetCore processPath="dotnet" arguments=".\yourAppl.dll" 
               stdoutLogEnabled="false" stdoutLogFile=".\logs\stdout" 
               hostingModel="InProcess" >
               <environmentVariables>
                   <environmentVariable name="ASPNETCORE_ENVIRONMENT" 
                       value="Development" />
               </environmentVariables>     
            </aspNetCore>
         </system.webServer>
      </location>
   </configuration>
   <!--ProjectGuid: 25e0e882-c3ff-4f8d-98cc-f26a692fa019-->
   

2. After web.config was fixed, then detailed errors are shown. And error was FileNotFoundException. The reason was that Directory.GetCurrentDirectory() works incorrectly.

So I've changed code to:

private IHostingEnvironment _env;

public Startup(IConfiguration configuration, IHostingEnvironment env)
{
    Configuration = configuration;
    _env = env;
}

public void Configure(IApplicationBuilder app, IHostingEnvironment env, IServiceProvider provider)
{   
    // The other code is omitted for the brevity
    app.UseStaticFiles(new StaticFileOptions()
    {                
        FileProvider = new PhysicalFileProvider(Path.Combine(_env.ContentRootPath, @"StaticFiles")),
        RequestPath = new PathString(Path.Combine(_env.ContentRootPath, "/StaticFiles"))
    });
}

3. I've added folder wwwroot inside of my ASP.NET Core 2.2 application and put Angular prod bundle into it

If somebody would need a guide how to deploy from Visual Studio

Answer 2

Try removing hostingModel="InProcess" from your web.config file.

Answer 3

I got similar type of problem and i fixed this by providing complete path of dotnet exe in config file. update process path according to your server path:

<aspNetCore processPath="C:\Program Files\dotnet\dotnet.exe" arguments=".\fooappl.dll" stdoutLogEnabled="true" 
      stdoutLogFile=".\logs\stdout" hostingModel="InProcess" />

Try once!