No service for type 'MQTTnet.Server.MqttServer' has been registered.

[296370493]

My project uses MQTTnet AspNetCore encountered an exception after upgrading to version 4.3.2.930, but there is no problem using version 4.3.1.873 for the same code.

`using MQTTnet.Server;
using MQTTnet.AspNetCore;

var builder = WebApplication.CreateBuilder(args);
builder.Services.AddConnections();
builder.Services.AddMqttServer(configure =>
{
configure.WithKeepAlive();
configure.WithDefaultEndpoint();
});
builder.Services.AddMqttTcpServerAdapter();
builder.Services.AddMqttWebSocketServerAdapter();
var app = builder.Build();

app.UseRouting();
app.UseEndpoints(endpoints => endpoints.MapMqtt("/mqtt"));
app.UseMqttServer(configure =>
{
configure.ValidatingConnectionAsync += Configure_ValidatingConnectionAsync;
});
app.Run();

Task Configure_ValidatingConnectionAsync(ValidatingConnectionEventArgs arg)
{
if (string.IsNullOrWhiteSpace(arg.ClientId))
{
arg.ReasonCode = MQTTnet.Protocol.MqttConnectReasonCode.ClientIdentifierNotValid;
return Task.CompletedTask;
}
if (string.IsNullOrWhiteSpace(arg.UserName) || arg.Password != "testPassword")
{
arg.ReasonCode = MQTTnet.Protocol.MqttConnectReasonCode.BadUserNameOrPassword;
}
return Task.CompletedTask;
}`