This allows you to customize the format of the error response for grape exceptions:

For example, you could do something like this:

```rb
rescue_from :grape_exceptions do |e|
  error!({ errors: [{ code: 'Error', message: e.message.squish }] }, e.status)
end
```

which would render like this:

```
{
  "errors": [
    {
      "code": "Error",
      "message": "Problem: message body does not match declared format Resolution: when specifying application/json as content-type, you must pass valid application/json in the request's 'body'"
    }
  ]
}
```