Hello everyone,I would like to know how to add icon on aui:button. I tried following however the icon is not showing on the button.  I am using liferay 7.3 CE. Thanks
<aui:button type="cancel" cssClass="btn-info" icon="icon-upload-alt" iconAlign="right" value="Cancel" />
                <aui:button type="button" icon="icon-search" value="Search" />