[Bug]: Cannot read properties of undefined (reading 'data') index.js:234:29

[VovaTereschenko]

What happened?

Steps to reproduce

1. install https://www.npmjs.com/package/chromadb v1.3.1 (didn't reproduce on v1.2.0)
2. use the most basic starter (same happens without using OpenAIEmbeddingFunction)

import { ChromaClient, OpenAIEmbeddingFunction } from "chromadb";

const chroma = new ChromaClient();
const embedder = new OpenAIEmbeddingFunction('API_KEY');

const collection = await chroma.createCollection("testing-chrome", {}, embedder);

await collection.add(
  ["id1", "id2"],
  undefined,
  [{ source: "source_one" }, { source: "source_one" }],
  ["Question", "Answer"]
);

const result = await collection.query(undefined, 2, undefined, [
  "Answer appears",
]);

console.log("result", result);

3. receive the error below

TypeError: Cannot read properties of undefined (reading 'data')
    at /Users/macbook/Developer/chroma-test/node_modules/chromadb/dist/main/index.js:234:29
    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
    at async ChromaClient.createCollection (/Users/macbook/Developer/chroma-test/node_modules/chromadb/dist/main/index.js:229:31)
    at async file:///Users/macbook/Developer/chroma-test/index.js:9:20

Versions

chroma v1.3.1, node v18.16.0, openai v3.2.1.

Relevant log output

No response

[VovaTereschenko]

Just to reduce the possible confusion – same happens with this example:

import { ChromaClient } from "chromadb";
const chroma = new ChromaClient("http://localhost:8000");
const collection = await chroma.createCollection("test-from-js");
for (let i = 0; i < 20; i++) {
  await collection.add("test-id-" + i.toString(), [1, 2, 3, 4, 5], {
    test: "test",
  });
}
const queryData = await collection.query([1, 2, 3, 4, 5], 5, { test: "test" });

[grishick]

As far as I can see, this happens when chroma-db is not actually running on localhost:8000. I got this exact error when I didn't start the chroma container. After I started chroma container, the exact code snippet that you posted above worked.

[AlexanderKozhevin]

yea, looks like connection error.
make sure db is running.
I had the same thing

[VovaTereschenko]

You're @grishick @AlexanderKozhevin right, thx! Tho I'd rather throw an error e.g.Error: connect ECONNREFUSED; response from server to save some time.

[grishick]

I think there is still a minor bug here - connection errors should be handled more gracefully with more informative message. I'd be happy to add a PR to handle that, but I also see there is an open PR for replacing axios with fetch, which should be merged first.

[jeffchuber]

@grishick thanks! that would be great.

I was just able to land #292 today. Next up is that axios swap as you noted.

[tonisives]

I have to say I still have this issue. And I know docker chroma is running, because it works with version 1.3.1.

There are no messages in the server for my TS code:

import { ChromaClient } from 'chromadb'

export const run = async () => {
  const chroma = new ChromaClient("http://localhost:8000");
  const collection = await chroma.createCollection("test-from-js");
}
run().then(() => console.log("finished"))

It doesn't work with 1.4.1 and 1.4.0.
Works with 1.3.1

Then server logs

2023-05-05 09:08:15 INFO     uvicorn.access  172.18.0.1:50196 - "POST /api/v1/collections HTTP/1.1" 200
2023-05-05 09:10:04 WARNING  chromadb.api.models.Collection No embedding_function provided, using default embedding function: SentenceTransformerEmbeddingFunction
2023-05-05 09:10:04 INFO     uvicorn.access  172.18.0.1:40998 - "POST /api/v1/collections HTTP/1.1" 200

edit:
I made another test project without typescript, and it works there with 1.4.1 as well.