RabbitSubscribe re-queue message even if the function has not throw any error

[Elad Israeli]

This is an example

 @RabbitSubscribe({
        queue: 'xxx',
    })
    public async consumeMessage(msg: DTO) {
            await this.postGetMetricsResponse.execute(msg)
    }

For some reason even if the whole logic inside the execute is finished without any throw Error or rejection, The message that arrives from the queue above is kind of requeue and the consumeMessage is re triggered again.

First I'm wondering why? maybe I miss something, I throw up some ideas maybe it is related to prefetch count?
something about channels? maybe the queue is not configured well?
Can someone give some light on how to investigate it.
Second can I somehow debug the internal code of the rabbitSubscribe I might found out that something about requeue happening.

And Third I got this INFO log from RabbitSubscribe, I'm not sure what does it mean, can someone put some light on that as well.

Received response: [{}] from subscribe handler [consumeMessage]. Subscribe handlers should only return void

[Elad Israeli]

If that's help I can attach here screenshot from how it looks like on the rabbitmq UI

I'm not sure I understand why it behaves like that.

[Elad Israeli]

Understood that The issue is applicative.