After updating XCode and SDK, storyboard opens without resources and *.h *.m files

Question

Hello. I updated Xamarin.iOS to 15.8.0.0 on my Mac and then updated xCode to version 13.3. After that, I continued to work on my project. At one point, I tried to open the storyboard to make design edits, but found that it only opens the storyboard itself, without all the accompanying files. I've already tried different methods to solve the problem:
At the beginning, I returned to an older version of the project, where the storyboard was guaranteed to open correctly, but it opened the same way
Reinstalled Visual Studio and xcode
Deleted .obj and .bin folders
Rebuilt and restarted in different ways

In general, I tried everything that I thought of yesterday and that I could google. What could be causing this problem and how can it be solved?

Answer 1

After the next reinstallation of Visual Studio with a complete cleaning of all SDKs and other packages, it worked.