A parser-blocking, cross site (i.e. different eTLD+1) script, http://t1.daumcdn.net/mapjsapi/js/main/4.4.14/kakao.js, is invoked via document.write. The network request for this script MAY be blocked by the browser in this or a future page load due to poor network connectivity. If blocked in this page load, it will be confirmed in a subsequent console message. See https://www.chromestatus.com/feature/5718547946799104 for more details.