l'upgrade si è interrotto comunicando che è stato inviato un messaggio al sistema di risoluzione dei bug

[paololega]

sono inesperto di ubuntu e quindi non sono in grado di fornirvi ulteriori informazioni
mi dispiace

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.38
ProcVersionSignature: Ubuntu 4.15.0-118.119-generic 4.15.18
Uname: Linux 4.15.0-118-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.17
Architecture: amd64
CrashDB: ubuntu
Date: Tue Sep 29 10:40:24 2020
InstallationDate: Installed on 2015-10-08 (1817 days ago)
InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2020-09-29 (0 days ago)
VarLogDistupgradeAptlog:
 Log time: 2020-09-29 10:39:13.561231
 Log time: 2020-09-29 10:39:18.948696
 Log time: 2020-09-29 10:40:06.540563
 Log time: 2020-09-29 10:40:29.303388
VarLogDistupgradeTermlog:

[Brian Murray (brian-murray)]

Reviewing the log file, /var/log/dist-upgrade/main.log, from your upgrade attempt there was a failure to communicate with the mirror of the Ubuntu archive which you use. This could either be due to an issue with your connection to the mirror or with the mirror itself. Regardless, this is an issue you'll need to sort out before the upgrade can complete. If after resolving the communication error with the mirror you are still unable to upgrade to a new release of Ubuntu please open a new bug report so we'll have fresh log files. Thanks and good luck!

[Launchpad Janitor (janitor)]

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