The problem is related to accessing local files from the browser the work around i found is to install this https://chrome.google.com/webstore/detail/web-server-for-chrome/ofhbbkphhbklhfoeikjpcbhemlocgigb/ chrome plugin, configure it to installation place (the level containing an index.html) and acces 126.0.0.1:8887 in the browser.