It could be that the privacy settings on the platform prevent you from seeing who hearted your story. Sometimes, to protect users' privacy, this information isn't made visible. Also, there might be a glitch or bug in the platform that's causing the issue.
There could be a few reasons. Maybe it's a technical problem on the platform's end. Or, it could be that the platform intentionally keeps that information anonymous to avoid potential conflicts or to maintain a certain level of user experience. Another possibility is that you haven't enabled the right settings to view who hearted your story.
Maybe the platform doesn't have that feature enabled for users. It could be a limitation of the system.