Avatar not showing in-app notification

Hi, I'm facing this issue where the avatar is not showing up in the notification. This was working before. At first, I was just using the system avatar with the image url that was passed to the actor data, which is not working anymore. I've tried passing the image as {{avatarUrl}} in the workflow and passing the url in the payload, but this is not working as well. Am I doing anything wrong? Any help would be appreciated. Thanks