cannot complete the upgrade from 16.04 to 18.04

[Mahmoud Abu-Seini]

am unable to continue with the upgrade from 16.04 to 18.04

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.26
ProcVersionSignature: Ubuntu 4.15.0-45.48~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-45-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CrashDB: ubuntu
Date: Sat Feb 23 13:50:47 2019
InstallationDate: Installed on 2018-02-21 (366 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2019-02-23 (0 days ago)
VarLogDistupgradeAptlog:
 Log time: 2019-02-23 13:49:39.625072
 Log time: 2019-02-23 13:49:42.547418
 Log time: 2019-02-23 13:50:20.659807
 Log time: 2019-02-23 13:50:49.663427
VarLogDistupgradeTermlog:

[Brian Murray (brian-murray)]

There seems to have been an error, which may have been temporary, connecting to your mirror of the Ubuntu archive.

2019-02-23 13:49:49,602 DEBUG examining: 'deb http://jo.archive.ubuntu.com/ubuntu/ xenial main restricted'
2019-02-23 13:49:49,603 DEBUG verifySourcesListEntry: deb http://jo.archive.ubuntu.com/ubuntu/ bionic main restricted
2019-02-23 13:49:49,603 DEBUG url_downloadable: http://jo.archive.ubuntu.com/ubuntu//dists/bionic/Release
2019-02-23 13:49:49,603 DEBUG s='http' n='jo.archive.ubuntu.com' p='/ubuntu//dists/bionic/Release' q='' f=''
2019-02-23 13:49:49,852 DEBUG error from httplib: 'Remote end closed connection without response'

Please try the upgrade again and report back.

[Launchpad Janitor (janitor)]

[Expired for ubuntu-release-upgrader (Ubuntu) because there has been no activity for 60 days.]