IIS 8.5, .NET 6 WebApi Controller does not work(500) while wwwroot files does

Question

I have WebApi .Net 6 added to IIS, but controllers doesn't work.

I turned on static files to be sure if the problem in Runtimes whatever, but images work by the link, so the app is working(?). In Task Manager i can see running tasks of the app.

1. I tried to turn on logging in web.config, no logs.

2. I installed Serilog expecting it will write logs as i see in console, but nothing was written, i guess it's because IIS runs .dll instead of .exe.

3. I tried manually create files on each step of the app, nothing was created....

So at this point i am stuck completely. Don't understand what the problem is.

When i run .exe of my app on the server, everything works by localhost link.

Release files created by the command: dotnet publish -c release

UPDATE

The problem was that i missed '/' in a file path... You can turn on app to show errors via web.config:

Answer 1

See the answer in the main post in Update.