Exception: An error occurred while retrieving the Neo4jVector index or creating the retriever.

[PWereh]

I'm getting this error while chatting with my newly created graph.

Embedding model openai chat-gpt 4o

Exception: An error occurred while retrieving the Neo4jVector index or creating the retriever. Please drop and create a new vector index 'vector': Index with name chunk_embedding already exists. The provided embedding function and vector index dimensions do not match. Embedding function dimension: 384 Vector index dimension: 1536

graph-builder-chat-details.json