## Unexpected Application Error!

### n.replace is not a function

```
TypeError: n.replace is not a function
    at e (https://substackcdn.com/bundle/static/js/8238.bc99db2d.js:1:11235)
    at r._bindMultiple (https://substackcdn.com/bundle/static/js/8238.bc99db2d.js:1:11755)
    at m.bind (https://substackcdn.com/bundle/static/js/8238.bc99db2d.js:1:7933)
    at m.unbind (https://substackcdn.com/bundle/static/js/8238.bc99db2d.js:1:8006)
    at m.unbind (https://substackcdn.com/bundle/static/js/8238.bc99db2d.js:1:8759)
    at https://substackcdn.com/bundle/static/js/reactSubstack.985f15b8.js:1:235158
    at oM (https://substackcdn.com/bundle/static/js/lib-react.0a401bd0.js:32:83640)
    at oD (https://substackcdn.com/bundle/static/js/lib-react.0a401bd0.js:32:83836)
    at u$ (https://substackcdn.com/bundle/static/js/lib-react.0a401bd0.js:32:111898)
    at u_ (https://substackcdn.com/bundle/static/js/lib-react.0a401bd0.js:32:95854)
```

💿 Hey developer 👋

You can provide a way better UX than this when your app throws errors by providing your own `ErrorBoundary` or `errorElement` prop on your route.