I have a connection error while upgrade ubuntu 14.04LTS to 16.04LTS.
Err http://archive.ubuntu.com/ubuntu/ xenial/universe libkf5activitiesexperimentalstats1 amd64 4:5.5.5-0ubuntu1
Connection failed [IP: 91.189.88.149 80]
how to fix this problem?
note: The internet connection works properly.
