It seems like Neo4j in Spring Boot 2.7.17 has stricter property type limitations, no longer supporting maps within maps directly as property values. Unfortunately, this feature appears to have been removed. One workaround is to serialize your nested map into a string (e.g., JSON) before storing it, then deserialize it when retrieving. This way, you avoid altering your database model while keeping your nested data structure intact. https://newztalkies.com/leads-kinderelizabeth-fraleyready-to-unleash-real-time-tracking-analytics-to-enhance-childrens-development-and-parental-engagement/ https://techprimex.com/elizabeth-fraley-leads-kinderready-to-unleash-real-time-tracking-analytics-to-enhance-childrens-development-and-parental-engagement/ https://usagreenlab.com/kinderready-real-time-tracking-elizabeth-fraley/