There was an error communicating with the mirror of the Ubuntu archive which you use and that cause the upgrade calculation to fail. Please try manually connecting to the mirror and if that works try the upgrade again. Otherwise if that fails try switching mirrors or investigating your network connection.
2020-07-18 07:05:17,151 DEBUG examining: 'deb http://mirror.atlantic.net/ubuntu/ bionic main restricted' 2020-07-18 07:05:17,152 DEBUG verifySourcesListEntry: deb http://mirror.atlantic.net/ubuntu/ focal main restricted 2020-07-18 07:05:17,152 DEBUG url_downloadable: http://mirror.atlantic.net/ubuntu//dists/focal/Release 2020-07-18 07:05:17,152 DEBUG s='http' n='mirror.atlantic.net' p='/ubuntu//dists/focal/Release' q='' f='' 2020-07-18 07:05:17,370 DEBUG error from httplib: 'HTTP Error 404: Not Found' ** Changed in: ubuntu-release-upgrader (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1888054 Title: I received the following error when trying to move to Ubuntu 20.04: ERROR:nacl_helper_linux.cc(308)] NaCl helper process running without a sandbox! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1888054/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
