Analytics not working - 500 API response - Feeds

The Stream analytics feature is not available for all plans.
 
Feed Analytics can be very helpful when used as a tool to add metrics to personalization models.
Personalization is a powerful feature - It enables the ability to leverage machine learning to optimize what's shown in the feed. Personalization is an add-on upgrade product offering from Stream to enterprise accounts that allows you to offer your customers highly customized feeds based on their impressions and engagements with previous content in a similar way that the Instagram Explore feed works.