Easing, Popper and Revolution errors

Just purchased and integrating with Laravel. The revolution slider is not loading. I see three sets of errors and ask for help solving these:

1. DevTools failed to load SourceMap: Could not load content for http://example.com/js/popper.js.map: HTTP error: status code 404, net::ERR_HTTP_RESPONSE_CODE_FAILURE

2. jQuery.Deferred exception: jQuery.easing[jQuery.easing.def] is not a function TypeError: jQuery.easing[jQuery.easing.def] is not a function

3. Uncaught TypeError: Cannot read property 'layers' of undefined in revolution.extension.layeranimation.min.js:7

Can you please advise?

Looking at this further, it appears to be because the js files are not loading correctly.
The js files are in the under the parent in a folder called 'js', to mirror the original structure. Based on previous posts, I have also tried adding
<script>window.scwJsPath = "{{ asset('/js') }}";</script>
just before calling functions.js
<script src="{{ asset('js/functions.js') }}"></script>
but line 191 of functions.js throws "Plugin could not be loaded" for each plugin.

Got it working by removing
<script src="{{ asset('js/app.js') }}" defer></script>

Now just left with

Uncaught (in promise) TypeError: Failed to execute 'exitFullscreen' on 'Document': Document not active
at T (revolution.extension.video.min.js:7)
at HTMLVideoElement.<anonymous> (revolution.extension.video.min.js:7)

Thanks for the reply. I don't have a live URL yet. I've resorted to trying to avoid using the Revolution slider for now.