Trying to install gnash on
Language: shell
feos@theos:~$ uname -a && lsb_release -a
Linux theos 5.4.0-65-generic #73-Ubuntu SMP Mon Jan 18 17:25:17 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.2 LTS
Release: 20.04
Codename: focal
I get
Language: shell
Hit:1 http://archive.ubuntu.com/ubuntu focal InRelease
Ign:2 http://ppa.launchpad.net/greysondn/tinatos/ubuntu focal InRelease
Get:3 http://archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB]
Get:4 http://security.ubuntu.com/ubuntu focal-security InRelease [109 kB]
Get:5 http://archive.ubuntu.com/ubuntu focal-backports InRelease [101 kB]
Err:6 http://ppa.launchpad.net/greysondn/tinatos/ubuntu focal Release
404 Not Found [IP: 91.189.95.85 80]
Hit:7 https://packages.microsoft.com/ubuntu/20.04/prod focal InRelease
Get:8 http://archive.ubuntu.com/ubuntu focal-updates/main i386 Packages [428 kB]
Get:9 http://security.ubuntu.com/ubuntu focal-security/main amd64 DEP-11 Metadata [24.3 kB]
Get:10 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages [814 kB]
Get:11 http://security.ubuntu.com/ubuntu focal-security/universe amd64 DEP-11 Metadata [57.6 kB]
Get:12 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 DEP-11 Metadata [264 kB]
Get:13 http://archive.ubuntu.com/ubuntu focal-updates/universe amd64 Packages [745 kB]
Get:14 http://archive.ubuntu.com/ubuntu focal-updates/universe amd64 DEP-11 Metadata [302 kB]
Get:15 http://archive.ubuntu.com/ubuntu focal-updates/multiverse amd64 DEP-11 Metadata [2,468 B]
Get:16 http://archive.ubuntu.com/ubuntu focal-backports/universe amd64 DEP-11 Metadata [1,768 B]
Reading package lists... Done
E: The repository 'http://ppa.launchpad.net/greysondn/tinatos/ubuntu focal Release' does not have a Release file.
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.