2023-12-05 16:52:09,938 INFO Using config files '['./DistUpgrade.cfg.bionic', '/etc/update-manager/release-upgrades.d/ubuntu-advantage-upgrades.cfg']'
2023-12-05 16:52:09,938 INFO uname information: 'Linux spn-python 4.15.0-213-generic #224-Ubuntu SMP Mon Jun 19 13:30:12 UTC 2023 x86_64'
2023-12-05 16:52:10,479 INFO apt version: '1.6.17'
2023-12-05 16:52:10,479 INFO python version: '3.6.9 (default, Mar 10 2023, 16:46:00) 
[GCC 8.4.0]'
2023-12-05 16:52:10,483 INFO release-upgrader version '20.04.40' started
2023-12-05 16:52:10,496 INFO locale: 'en_US' 'UTF-8'
2023-12-05 16:52:10,605 DEBUG screen returned: 'No Sockets found in /run/screen/S-root.

'
2023-12-05 16:52:10,605 INFO re-exec inside screen: '['screen', '-e', '\\0\\0', '-c', 'screenrc', '-S', 'ubuntu-release-upgrade-screen-window', '/tmp/ubuntu-release-upgrader-x2ilyxgc/focal', '--mode=server', '--frontend=DistUpgradeViewText']'