how to get the vanna training data from chromadb to edit/modify

[gzjamesbond]

I deploy a chromadb on-premise to store the vanna vector. Now I want to edit the training data. But in Flask, I only can add and delete the training. I train below, but cannot get the chromadb collections of vanna.

improt chromadb
client = chromadb.Client()
collections = client.list_collections()
for colletion in collections:
... print(f"Collection:{collection}")

but there is no collections printed.