Empty response (204) with Dynamic content

Hi,
I’m trying to setup Dynamic Web Content.
Tried both Campaign based version, and Filter based version.
I have all components ready, and default content, and I see the xhr request going to the mautic server.
The response from the Mautic server is 204 (no content)
Is this a technical issue, is this a filter not working?

I would imagine, if it’s a filter not working, or descision in a campaign, I would get the default reponse. But, it’s empty.

I’m using version 2.12.2