TypeError: Cannot read property 'callback' of undefined

```
const { getCurrentInvoke } = require('@vendia/serverless-express')
app.get('/', (req, res) => {
const { event, context } = getCurrentInvoke()

res.json(event)
})
```

What is wrong about the code above? I'm getting the following error:

```
TypeError: Cannot read property 'callback' of undefined
at getFramework (/my-app/node_modules/@vendia/serverless-express/src/frameworks/index.js:7:18)
at configure (/my-app/node_modules/@vendia/serverless-express/src/configure.js:22:35)
at ResizeToThreeDimensionsController.handle (/my-app/src/adapters/resizeToThreeDimensionsController.ts:81:40)
at Layer.handle [as handle_request] (/my-app/node_modules/express/lib/router/layer.js:95:5)
at next (/my-app/node_modules/express/lib/router/route.js:137:13)
at Route.dispatch (/my-app/node_modules/express/lib/router/route.js:112:3)
at Layer.handle [as handle_request] (/my-app/node_modules/express/lib/router/layer.js:95:5)
at /my-app/node_modules/express/lib/router/index.js:281:22
at Function.process_params (/my-app/node_modules/express/lib/router/index.js:341:12)
at next (/my-app/node_modules/express/lib/router/index.js:275:10)
```