https://learn.microsoft.com/pl-pl/dotnet/api/system.text.decoderexceptionfallbackbuffer?view=netframework-4.8.1&viewFallbackFrom=net-9.0
DecoderExceptionFallbackBuffer Class (System.Text) | Microsoft Learn
Throws DecoderFallbackException when an encoded input byte sequence cannot be converted to a decoded output character. This class cannot be inherited.
class systemtextmicrosoftlearn