(Guidance 2022.2.1.14) IndexOutOfRangeException in Blazor web app About page

[HaGGi13]

Describe the bug

A new generated Blazor web app targeting environment Germany generated, throws an exception on navigating to the About page by selecting the "About" menu entry.
This is caused, because the default localization resource file About.resx contains a value that cannot be parsed. In concrete, the resource cultures contains the value cultures, but as the code tries to split the value first by ; (semi-colon) and than by , (comma) this will result in an empty array that is tried to access directly via index.
This is throwing in an out of bound exception in file About.razor in line 34.

I didn't verified this for Belgium targeting projects, but I expect the same behavior there too.

To Reproduce

TL;DR - Steps to reproduce the behavior

1. Ensure browser cache (local storage + cookies) were deleted
   • Otherwise possible already selected culture will be used instead of default/fallback
2. Select "About" page in web app

Super detailed - Steps to reproduce the behavior:

1. Generate empty solution incl. YARP
2. Generate backend service
3. Generate Blazor web app
4. Register all components in indentity service for being able to authenticate and run the skeleton
5. Run all three components in debug mode out of Visual Studio or deploy it on a server
6. If not in debug mode in Visual Studio: Navigate to web app
7. Open Edge F12 developer tools and select tab "Console"
8. Ensure browser cache (local storage + cookies) were deleted
   • Otherwise possible already selected culture will be used instead of default/fallback
9. In web app click menu entry "About"
10. In F12 Tools see errors listed and in web app see error at the bottom of the screen

Expected behavior

There's no exception thrown and either the language selection buttons appear or not, depending on the resource file for localization selected.

Screenshots

Exception in web app:

About.resx cultures value:

Desktop (please complete the following information)

• .NET SDK v8.0.200
• Guidance v2022.2.1.14
• Arc4u v8.1.0
• Nova v2.3.4-rc4

[vvdb-architecture]

Duplicate of #77 , but much better explained!