I now get the following warning from chrome. I assume you will be moving to 8.0.0 version at some point. Either way, there’s a way to remove this message, either permanently or for the time being.
navigo.min.js:2 Navigo router library will have soon a major upgrade to version 8.0.0. If you don't have time for such migration please stick with the latest 7.1.2 version. To avoid seeing this message set a strict 7.1.2 in your package.json file