kcfinder not showing any images for CKeditor

Browser server for CKeditor does not work anymore, we do get a blank popup screen too and not able to choose images from server. I am able to replicate this on dmaster

ref : https://dmaster.demo.civicrm.org/sites/all/modules/civicrm/packages/kcfinder/browse.php?cms=civicrm&type=images&CKEditor=details&CKEditorFuncNum=0&langCode=en