Ubuntu下运行floodlight通过浏览器无法查看UI

Ubuntu版本14.04.4
floodlight版本应该是1.2 今天从github.com/floodlight/floodlight.git上clone的
jdk版本1.8.0_111
运行floodlight后一直出现
“2016-11-11 01:25:55.954 INFO [n.f.l.i.LinkDiscoveryManager] Sending LLDP packets out of all the enabled ports”
且通过http://localhost:8080/ui/inde...无法打开floodlight的UI界面。