Azure Functions V4 NET 6 Service Bus Trigger not fired

I just upgraded my Azure Functions to v4. I have a Service Bus Queue trigger to process the messages of a queue.
After I did the upgrade it is no more fired and I don’t understand why and how to investigate.
The code is not changed from one version to another and I could not find any breaking change on this topic.
The log of the function does not show any error or execution and the messages are stuck in the queue without additional information.

This is my trigger:

public class IncomingQueueTrigger
{
    private string _body;
    private HttpResponseMessage response;
    private SignalErrorQueueItem _errorObj;
    private readonly short _maxTriesCount = 2;
    private readonly HttpClient _client;

    public IncomingQueueTrigger(IHttpClientFactory httpClientFactory)
    {
        _client = httpClientFactory.CreateClient();
    }

    [FunctionName("IncomingQueueTrigger")]
    public async Task Run([ServiceBusTrigger("%my_queue_name%", Connection = "my_connection_string")] ServiceBusReceivedMessage myQueueItem, string label, ServiceBusReceiver messageReceiver)
    {
        // my code
    }
}