Error L.control.fullscreen is not a function

First time using this and I got the following error:

`index.js:92 Uncaught TypeError: L.control.fullscreen is not a function`

It's maybe related to my current used leaflet dependencies :

```
    "leaflet": "^1.6.0"
    "react-leaflet": "^2.6.3"
    "react-leaflet-fullscreen": "^1.0.1",
```

anybody had a similar issue?

thanks