NavBar Toggler Does Not Work When Page is Collapsed

[ifelsejet]

Expected behavior

• On desktop, the user should be able to see the separate page links (about us, contact us, i.e)
• On mobile, we should see some sandwhich(?) type button to access the links, in which they should be able to click it and go to the page of their liking.

Actual behavior

• Desktop works just fine however, the mobile navbar is unable to be used

Resources

I believe that the issue is somewhere along here, inside index.html
<a class="navbar-brand" href="#">FTC 9432: Blood Sweat & Gears</a> <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarResponsive" aria-controls="navbarResponsive" aria-expanded="false" aria-label="Toggle navigation">

Bootstrap Documentation on Togglers: https://getbootstrap.com/docs/4.0/components/navbar/#toggler

[ifelsejet]

The expected behavior is similar to what is found here: https://www.quackit.com/bootstrap/bootstrap_4/tutorial/bootstrap_navbars.cfm