The website is different than the qlik server. I checked communication between browser and the website, all javascripts were pulled completely. All ccs too except toolbar.css. It popped up an error undefined from this code:
require(["js/qlik"], function (qlik) {
qlik.setOnError(function (error) {
alert(error.message);
});
After that 2 more errors "No object with Id ... found". Then qlik sense screen error.