branch links 404 not found on firefox

[luane-aquino]

When click any branches, it gives an error '404 not found'. It is happening on firefox, on chrome it is working.

[Nick-Hope]

It depends where you open the 'master' menu from. From many URLs within the tree you will get 404 errors because the links vary depending on where in the tree you open the menu. Try opening it from https://github.com/iamshaunjp/modern-javascript