Any guess what could be wrong?
Chrome's inspect function is telling a bunch of errors like this: GET localhost:8080/CRUD/assets/grocery_crud/themes/flexigrid/js/jquery.printElement.min.js net::ERR_UNKNOWN_URL_SCHEME
The ERR_UNKNOWN_URL_SCHEME error is commonly because of your browser issue . There's no application on your device which can handle that particular action. It is a Chromium bug . In Chrome version 40 and up, this bug has resurfaced, but only if you are manually entering the URL of the redirect page in the address bar. The issue is on the chromium issue tracker here