Integrated UI5 applications to SAP NW Portal don't work in Internet Explorer

Hello!

We have a few UI5 applications, including bpminbox, they are integrated to SAP NW Portal 7.40 SP11 through URL iView. They are working fine in Chrome, but in IE we can see only a blank screen. In console of IE we can see an error SCRIPT438: Object doesn't support property or method "getCore". Here it's a line 02

sap.ui.localResources("wl");  if(sap.ui.getCore().getConfiguration().getTheme()==="sap_hcb"){  jQuery.sap.includeStyleSheet("wl/css/inbox_hcb.css");  }else{  jQuery.sap.includeStyleSheet("wl/css/inbox.css");  }        new sap.ui.core.ComponentContainer({        name: 'sap.bpm.inbox'    }).placeAt('content');

How can we fix that problem?

I must mention that our application is hosted on the same as portal server.