Unable to add / update repositories in lubuntu 18.04
65
What can I do if a repository/PPA does not have a Release file?
2670
Why is "No new release found" when upgrading from a LTS to the next?
77705
Unable to upgrade in ubuntu
120
How do I restore the default repositories?
54571
How do I install the latest version of Git with apt?
12880
How can I add new autostart programs in Lubuntu?
49295
How to add startup applications in lubuntu?
55239
Cannot install packages in Mint: "Unable to fetch some archives"
135204
Add a new repository to software sources
51598
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
133
How can I fix a 404 Error when using a PPA or updating my package lists?
61177
How to set up an APT repository?
9901
How to upgrade from 18.10 to 19.10, using the command line?
15183
Elementary OS PPA gives “The repository does not have a Release file.” error
110896
Package installation - Outdated repository
11909
404 error with apt-get update, Don't have any PPA's
154815
How do I add a repository from behind a proxy?