HTTP Error 500.19 in IIS on run ASP .NET Core application

I'm trying to run an application (which used to work on another iis)

1) All permissions for writing / reading I gave to all users

2) All services from the section "Application Development Features" I installed

3) When I start the application: > dotnet AppName.dll , It launches and works

But through the server IIS it does not start. This is what the IIS says: HTTP 500.19 — Internal Server Error

Module nbsp; IIS Web Core

Notification Unknown

Handler Not yet determined

Error Code 0x8007000d

Config Error

Config File \?\C:\inetpub\MyServices\ContractNET\web.config

Setting the source:

   -1: 
    0: