I have a Json file which has Dictionary type structure. I want to get chunks of its information followed by create embeddings.

I am getting this error while I create Embeddings:

from langchain_community.vectorstores import Chroma
from langchain_community.embeddings.ollama import OllamaEmbeddings

vectorstore = Chroma.from_documents(
                    documents=chunks,
                    embeddings_model = OllamaEmbeddings(base_url = "http://localhost:11434", model = "nomic-embed-text:latest")
                )

the error is:

AttributeError: ‘str’ object has no attribute ‘page_content’

Could anyone suggest what can be the problem and how to solve it?
Note: I want to use Open source Embeddings model (not the paid one).