The repository 'http://ppa.launchpad.net/t-tujikawa/ppa/ubuntu xenial Release' does not have a Release file
133
How can I fix a 404 Error when using a PPA or updating my package lists?
77827
How do I file a bug on a PPA upstream with the maintainers using Launchpad?
9841
How can I fix "E:The package linux-modules-5.4.0-56-generic needs to be reinstalled, but I can't find an archive for it."?
150104
Unable to download software center from package manager: 404 Not Found
7107
How do I enable the source code repositories?
151066
Failed to fetch PPA Error (Deluge)
132933
Is there a tool to update my PPA sources.list entries after upgrading?
96391
dpkg exit with error parsing file `/var/lib/dpkg/status`, what to do?
73083
failed to connect to http://changelogs.ubuntu.com/meta-release
15183
Elementary OS PPA gives “The repository does not have a Release file.” error
46424
Cannot update software center repositories
11909
404 error with apt-get update, Don't have any PPA's
42634
How do I upgrade to the development release (aka. Ubuntu+1)?
49149
How do I solve "Unable to fetch some archives, maybe run apt-get update or try with --fix-missing" error?
40335
Unity / Compiz problem after update from Xorg ppa
43425
failure to load repository information
26745
Skipping acquire of configured file 'contrib/binary-i386/Packages' as repository ... doesn't support architecture 'i386'