Get sources. Next run. In my case the issue must have resided somewhere behind my national download server as opposed to the main server. I changed the download remote into the main server and the problem was solved. Probably it has been a temporary glitch on the national server ; and I would not know who to contact and notify of the problem there. However, unlike the original post , the errors were not Not found but Undetermined Error :.
Also take note that this incident is different from many others reported out there, for it involves an official Ubuntu server and not just an unsupported package.
Ubuntu Community Ask! Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Asked 4 years, 1 month ago. Active 1 year ago. Viewed 48k times. I run "sudo apt -y update" on my Ubuntu N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure 8 manpage for repository creation and user configuration details. What could the reason be? How can I fix this problem? Thank you! Improve this question. XavierStuvw 1, 2 2 gold badges 13 13 silver badges 36 36 bronze badges.
Why do you have Where did you get the I installed the official Ubuntu Does this answer your question? How do I restore the default repositories? Show 3 more comments. Active Oldest Votes. Then you should do the obligatory: sudo apt clean sudo apt update sudo apt dist-upgrade. Improve this answer. Videonauth Videonauth It might be better to use sudo sed -i. For example, there's no way of knowing whether they have restricted turned on or not and you have it turned off.
I had the same problem today on a Ubuntu After a bit of reading and thinking what I had done on the system, I figured it had to do with the fact, that I changed the default python to Python3. For me, changing the python back to 2. Do your dist-upgrade, probably you need to use -f or do the --force-remove from the above comments, if you have tried it with python 3 active, like I did.
Also python is throwing out errors about module configparser install it via pip install configparser. Ubuntu Community Ask! Sign up to join this community. The best answers are voted up and rise to the top.
Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Asked 4 years, 11 months ago.
Active 3 years, 3 months ago. Viewed 20k times. Done Reading package lists Done Building dependency tree Reading state information Done Calculating upgrade Done The following packages were automatically installed and are no longer required: linux-headers The following packages have been kept back: gnome-software gnome-software-common liboxideqt-qmlplugin liboxideqtcore0 liboxideqtquick0 oxideqt-codecs-extra ubuntu-software The following packages will be upgraded: apport 1 upgraded, 0 newly installed, 0 to remove and 7 not upgraded.
Need to get kB of archives. After this operation, 0 B of additional disk space will be used. Do you want to continue? Preparing to unpack Errors were encountered while processing: apport apport-gtk Reading package lists The following additional packages will be installed: apport The following packages will be upgraded: apport 1 upgraded, 0 newly installed, 0 to remove and 7 not upgraded.
Done The following packages were automatically installed and are no longer required: apport-symptoms python3-systemd Use 'sudo apt autoremove' to remove them. After this operation, kB disk space will be freed. Removing apport 2.
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