I met the issue when installing packages from a private PPA of Launchpad. Hope this would be helpful to reproduce the issue.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apt in Ubuntu. https://bugs.launchpad.net/bugs/1801338 Title: apt fails to properly handle server-side connection closure Status in apt package in Ubuntu: Triaged Status in apt source package in Xenial: Confirmed Status in apt source package in Bionic: Triaged Bug description: [Impact] In some cases, apt does not correctly handle server-side connection closure after a pipeline, and aborts the file being downloaded with an "Undetermined Error" when the connection has been closed. [Test case] This could be seen by running apt build-dep evince on cosmic with a recent apt with the pipelining fix (such as 1.6.6) against a local mirror running apache from trusty. It remains to be seen whether this is easily reproducible for anyone. [Regression potential] N/A yet. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1801338/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp