Bug with MongoDB Atlas Vector Search returning empty results

The community member is experiencing a problem with MongoDBAtlasVectorSearch, where the results from index.as_retriever() and index.as_query_engine() are empty, even though they have added nodes and embedding documents. Another community member asks if the vector index was created in the MongoDB UI/dashboard, to which the original poster responds that they created it using the tutorial at https://www.mongodb.com/docs/atlas/atlas-vector-search/ai-integrations/llamaindex/. There is no explicitly marked answer in the comments.