🐛 BUG: Wrangler dev server silently dies without showing in the CLI or throwing an error

[NikhilVerma]

Which Cloudflare product(s) does this pertain to?

Workers AI

What version(s) of the tool(s) are you using?

^3.60.3

What version of Node are you using?

v20.16.0

What operating system and version are you using?

MacOS 15.1 (24B83)

Describe the Bug

Observed behavior

1. Run npm run dev --experimental-vectorize-bind-to-prod
2. Post some vectors to the upsert endpoint
3. The wrangler local dev dies (the HTTP endpoint stops working) but the CLI reports no errors, infact the CLI behaves as if the backend is working, however it shows no logs of any requests. The server has to be restarted.
4. When I deploy the worker to prod it actually works fine!

Here is the relevant script section.

import {
	Vectorize,
	ExportedHandler,
	VectorizeVector,
	VectorizeVectorMetadataFilter
} from "@cloudflare/workers-types/2023-07-01";

export default {
	async fetch(request, env, _ctx): Promise<Response> {
		const path = new URL(request.url).pathname;

		// Upsert vectors
		if (path.startsWith("/documents-embedding/upsert")) {
			const vectors = await request.json<VectorizeVector[]>();
			const inserted = await env.DOCUMENTS_INDEX.upsert(vectors);
			return Response.json(inserted);
		}

Also my wrangler.toml (Relevant portion)

[[vectorize]]
binding = "DOCUMENTS_INDEX"
index_name = "documents-index"

Expected behavior

Wrangler dev should not fail

Steps to reproduce

Provided above

Please provide a link to a minimal reproduction

No response

Please provide any relevant error logs

ConnectionClosed: The socket connection was closed unexpectedly. ) path: "http://localhost:8787/documents-embedding/upsert"

[garrettgu10]

Hi @NikhilVerma, I'm having trouble reproducing this. Can you share the full script as well as cURL for the requests you use to upsert the vectors?