How can I resolve this issue? Thank you!
Failed to fetch h ttp://us.archive.ubuntu.com/ubuntu/pool/main/c/compiz/compiz-gnome_0.9.7.8-0ubuntu1_amd64.deb 404 Not Found [IP: 91.189.92.177 80]
Failed to fetch h ttp://us.archive.ubuntu.com/ubuntu/pool/main/c/compiz/compiz-plugins-default_0.9.7.8-0ubuntu1_amd64.deb 404 Not Found [IP: 91.189.92.177 80]
Failed to fetch h ttp://us.archive.ubuntu.com/ubuntu/pool/main/c/compiz/libdecoration0_0.9.7.8-0ubuntu1_amd64.deb 404 Not Found [IP: 91.189.92.177 80]
Failed to fetch http://us.archive.ubuntu.com/ubuntu/pool/main/c/compiz/compiz-core_0.9.7.8-0ubuntu1_amd64.deb 404 Not Found [IP: 91.189.92.177 80]
Failed to fetch http://us.archive.ubuntu.com/ubuntu/pool/main/c/compiz/compiz_0.9.7.8-0ubuntu1_all.deb 404 Not Found [IP: 91.189.92.177 80]