Can't add assets to my Bootstrap sub-theme
I see that you don't include global-scripts in .info.yml file. You should have something like this at the beginning of your .info.yml file:

global-styling:
  css:
   theme:
    css/style.css: {}

global-scripts:
  js:
   js/URI.min.js: {}
    js/jquery.waypoints.min.js: {}
     js/global.js: {}


If this doesn't work, I would highly recommend you to get a fresh copy of SASS directory of starterkits(it is in themes/contrib/starterkits/sass) then check out all the THEMENAME and replace it with your custom theme name. Kind regards