Sending custom response on JWT Bearer Auth failure

Program.cs

var bld = WebApplication.CreateBuilder(args);
bld.Services
   .AddAuthenticationJwtBearer(
       s => s.SigningKey = "...",
       o =>
       {
           o.Events = new()
           {
               OnChallenge =
                   async ctx =>
                   {
                       ctx.HandleResponse();

                       var requiresAuth = ctx.HttpContext.GetEndpoint()?.Metadata.OfType<IAuthorizeData>().Any();

                       if (ctx.AuthenticateFailure is not null || requiresAuth is true)
                           await ctx.Response.SendErrorsAsync([new("Security", "You are unauthorized!")], 401);
                   }
           };
       })
   .AddAuthorization()
   .AddFastEndpoints()
   .SwaggerDocument();

var app = bld.Build();
app.UseAuthentication()
   .UseAuthorization()
   .UseFastEndpoints(
       c =>
       {
           c.Errors.UseProblemDetails();
           c.Endpoints.Configurator =
               ep =>
               {
                   if (ep.AnonymousVerbs is null)
                       ep.Description(b => b.Produces<ProblemDetails>(401));
               };
       })
   .UseSwaggerGen();
app.Run();