Error with GraphQL Query on Phoenix Server's Traces Page

Any ideas on this error that we are seeing when navigating to phoenix server's traces page

Error fetching GraphQL query 'ProjectPageQuery' with variables '{"id":"UHJvamVjdDox","timeRange":{"start":"2024-05-14T23:00:00.000Z","end":"2025-05-21T23:00:00.000Z"}}': [{"message":"'str' object has no attribute 'get'","locations":[{"line":86,"column":3}],"path":["project","rootSpans"]}]

Recently moved to persistence with postgres Solved it temporarily by flushing postgres db and letting migration run from start (but this is unideal, was only ok cuz we had 1-2 traces alone not a lot) Any idea why this happens? we are on 4.1.2