vendor.js file is actually an HTML file? - Ember 2.6

When loading my application I get the WSOD, opening the console shows an error for two JS files:

uncaught SyntaxError: Unexpected token < vendor.js
uncaught SyntaxError: Unexpected token < myapp.js

Looking at the contents of the files vendor.js and myapp.js in Chromes devtools, their contents are the contents of the dist/index.html file, so they're not the actual javascript files (i.e. dist/assets/vendor.js and dist/assets/myapp.js).

The only way I built the ember application was running the command ember build, what would the reason be for seeing an html file in devtools, and is that the actual contents of what the browser sees for the JS file?