<!-- 0Gkit docs — INDEXER_CURSOR_BACKEND_UNREACHABLE
     Source: https://docs.0gkit.com/errors/INDEXER_CURSOR_BACKEND_UNREACHABLE
     LLM-friendly Markdown twin of the page. -->

# INDEXER_CURSOR_BACKEND_UNREACHABLE

**Cursor backend unreachable**

## What happened

The configured cursor store (sqlite file, Redis instance) wasn't reachable — file permissions, missing Redis, wrong connection string.

## How to fix

Verify the backend is up and configured correctly. For Redis, confirm the URL via `redis-cli -u $REDIS_URL ping`. For sqlite, check the file path is writable.

## Example

```ts
import { RedisCursorStore } from "@foundryprotocol/0gkit-indexer/cursors/redis";
const cursor = new RedisCursorStore({ url: process.env.REDIS_URL });
```

## Reference

- Namespace: `INDEXER`
- Help URL: `https://0gkit.com/errors/INDEXER_CURSOR_BACKEND_UNREACHABLE`
- See also: [all error codes](/errors)