I answer this since I resolved it, and if someone encounters this problem, then they can solve it.
The steps I took to solve this problem.
npm cache clear && bower cache clean && rm -rf node_modules bower_components && npm install && bower install
clean and reinstall the Bower component and npm component.
ember init
, , ember-qunit, , , lib cropperjs bower, ember-qunit , ember-cli-build.js, cropperjs npm node_modules, .