> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vendo.run/llms.txt
> Use this file to discover all available pages before exploring further.

# E-DEV-001

> Retired: doctor never starts a dev server, so it can never fail to start one.

```text retired theme={null}
E-DEV-001 — retired, doctor no longer emits this code
```

`error_code: E-DEV-001` · `status: retired`

## What you're seeing

Nothing: `npx vendo doctor` cannot print this code anymore. You are reading
it from an older run's output, or a saved report.

## Why

This warning fired when doctor offered to start your dev server for its live
probes and the server never came up in time. Doctor reads files, not
servers. It never starts anything, so this can never happen.

## The fix

Nothing to do. Doctor runs the same whether your app is up or down.

## Related errors

* [E-CFG-001](/production/troubleshooting/e-cfg-001) — a missing `.vendo/` config file, one of the checks doctor still runs
* [E-WIRE-001](/production/troubleshooting/e-wire-001) — missing server wiring, found by reading your source