<script
type="text/javascript"
async defer
src="//http://assets.pinterest.com/js/pinit.js"
></script>
The issue is that the URL given in the code for the script is incomplete and is a dead link, causing page load issues. I assume this is coming from the template (Verona), but the Pinterest entry in the Template Style settings is empty, as are all other icons.
What is the fix for this?