V13: Production and Development mode - Page not found, physical template missing

Greetings,

I have tried to follow the following instructions:

As soon as I set “Development” or “Production” as the mode, I only get the error message:

Page not found. No template exists to render the document at URL '/'.

And in the console:

No physical template file was found for document type with alias website

What I have done so far.
In appsettings.json I set the mode to Development and ModelsMode to “SourceCodeAuto”.

I have removed the following settings from the .csproj:

<RazorCompileOnBuild>false</RazorCompileOnBuild>
<RazorCompileOnPublish>false</RazorCompileOnPublish>

And the .csproj also contains “CopyRazorGenerateFilesToPublishDirectory”, set to true.

I have published the website and also built it as a release build. But I still get the same errors. What am I doing wrong? Am I missing something?

My current appsettings.json file:

{
  "$schema": "appsettings-schema.json",
  "Serilog": {
    "MinimumLevel": {
      "Default": "Information",
      "Override": {
        "Microsoft": "Warning",
        "Microsoft.Hosting.Lifetime": "Information",
        "System": "Warning"
      }
    }
  },
  "Umbraco": {
    "CMS": {
      "ModelsBuilder": {
        "ModelsMode": "SourceCodeAuto",
        "FlagOutOfDateModels": true
      },
      "Runtime": {
        "Mode": "Development"
      },
      "Global": {
        "Id": "6accd714-46f7-4370-9c2b-a7d81a9087b6",
        "SanitizeTinyMce": true,
        "UseHttps": false
      },
      "Content": {
        "AllowEditInvariantFromNonDefault": true,
        "ContentVersionCleanupPolicy": {
          "EnableCleanup": true
        }
      },
      "Unattended": {
        "UpgradeUnattended": true
      },
      "Security": {
        "AllowConcurrentLogins": false
      },
      "WebRouting": {
        "UrlProviderMode": "Absolute"
      }
    }
  },
  "ConnectionStrings": {
    "umbracoDbDSN": "Data Source=|DataDirectory|/Umbraco.sqlite.db;Cache=Shared;Foreign Keys=True;Pooling=True",
    "umbracoDbDSN_ProviderName": "Microsoft.Data.Sqlite"
  }
}

This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/113522-v13-production-and-development-mode-page-not-found-physical-template-missing