Embedded webcontent not embedded https url

Hi,
i am using embedded browser for paypal payment url but it’s not working , vaadin embedded always all url embedded but now i am using that url not show on page. actually what is wrong process me.

actually i am using
WizardProgressListener
then internally implemented embedded url method

Embedded embedded = new Embedded(“”,new ExternalResource("
https
://paypal.com?token=34343434434"));

Note : now i am using
https

url
is possible to embedded the url .

Thanks
karthik