I am writing a Python program that imports JSON files into ChromaDB using Langchain with the following code:

chroma_db = Chroma(persist_directory=db_directory, collection_name=collection_name, embedding_function=embedding_function,
                           collection_metadata={"hnsw:space": "cosine"},
                           relevance_score_fn=lambda distance: 1.0 - distance / 2)
        docs = None
        try:
            text_splitter = RecursiveJsonSplitter(max_chunk_size=2000)
            docs = text_splitter.create_documents(json_object)
        except:
            docs = None
            logging.error("Failed to parse document with JSON - attempting regular text splitter")
            state["persistent_logs"].append("Failed to parse document with JSON - attempting regular text splitter")

        if docs is None:
            text_splitter = RecursiveCharacterTextSplitter(chunk_size=2000, chunk_overlap=100)
            docs = text_splitter.create_documents(json_object)

        if doc_ids is None:
            doc_ids = [str(uuid.uuid4()) for i in range(1, len(docs) + 1)]
        else:
            # We look to see if the document exists:
            result = chroma_db.get(doc_ids)
            if result is not None and len(result) > 0:
                # This is an update:
                chroma_db.update_documents(doc_ids, docs)
                return doc_ids

        chroma_db.from_documents(docs, embedding_function, ids=doc_ids)

What I see in the logs is that the RecursiveJsonSplitter almost always fails – despite me manually ensuring that the JSON object is valid – and that the documents get entered using the RecursiveCharacterTextSplitter.

When I then attempt to obtain a similarity score using:

results = chroma_db.similarity_search_with_relevance_scores(query_object, k=1)

I get the following error:

File "/venv/lib/python3.12/site-packages/langchain_community/embeddings/huggingface.py", line 99, in <lambda>
    texts = list(map(lambda x: x.replace("n", " "), texts))
                               ^^^^^^^^^
AttributeError: 'dict' object has no attribute 'replace'

I have been looking everywhere for a solution to this problem but, thus far, nothing has helped. I am using sentence-transformers, version 3.0.1.

Can somebody please help?