It's trying to go to us1.ethermine.org and can't get there.
Try to ping and tracert all Ethermine servers, maybe your firewall or your network gateway does not allow it, if you are connected to a dorm/neighborhood LAN network.
It pings fine. However, there is a couple of timeouts during tracert - one between my firewall and my ISP, and one somewhere en route.
https://image.ibb.co/gtmrL6/ping.png