NSwag is incorrectly generating query parameters for form data in the Swagger UI

[Nizar-Almshantaf]

I have an endpoint that takes a file from a form request but Swagger is being incorrectly generated, here is a simple snippet of the code.
PS: the endpoint is working through Postman (using form-data request)

here is the endpoint:
public async Task<DocumentDto> SendDocument([FromForm] CreateDocumentCommand command, ISender sender) { var res = await sender.Send(command); return res; }

here is the command:
`
public class CreateDocumentCommand : IRequest
{

public IFormFile? DocumentFile { get; set; }

}
`
and here is the generated UI for the endpoint

is the config.nswag is misconfigured or what could be the issue ?