Missmatch of application/json strings in ExampleFilters

[mange89b]

Two different strings in two different files make you always to get FormatterNotFoundException "OutputFormatter not found for 'application/json; charset=utf-8'" error when to running MVC

ExamplesConverter.cs

private static readonly MediaTypeHeaderValue ApplicationJson = MediaTypeHeaderValue.Parse("application/json; charset=utf-8");

MvcOutputFormatter.cs

private string SerializeWithoutMvc(T value, MediaTypeHeaderValue contentType)
{
if (contentType.MediaType.Value == "application/json")
{
#if NET5_0_OR_GREATER
return System.Text.Json.JsonSerializer.Serialize(value,
new System.Text.Json.JsonSerializerOptions(System.Text.Json.JsonSerializerDefaults.Web));
#else
return System.Text.Json.JsonSerializer.Serialize(value);
#endif
}
throw new FormatterNotFoundException(contentType);
}