Logging raw request body in express app not working

Question

In my express app deployed to railway, in the following middleware, the first `console.log` outputs the request body correctly but the second one outputs an empty string. What gives? It works fine locally.

**Project ID:** `d414d846-9e9b-45fe-b52f-1fa28e8426ae`
**Node image:** `node:22.12.0-alpine`
**Express version:** `5.0.1`

```javascript
export default function requestLogger(
  req,
  res,
  next
) {
  express.raw({ type: "*/*" })(req, res, () => {
    const body = req.body.toString();
    console.log("body: ", body);
    console.log(body);
  });

next();
}
```