The repository 'http://nginx.org/packages/mainline/debian xenial Release' does not have a Release file.

[Aleksandar Lazic]

Hi.

I tried today to install nginx on a ubuntu 16.04.3 LTS but `apt-cache 
showpkg nginx` does not show me the nginx package from nginx.org.

I followed the command on this page 
http://nginx.org/en/linux_packages.html#mainline

The `apt-get update` output

####
apt-get update
Get:1 http://security.ubuntu.com/ubuntu xenial-security InRelease [102 
kB]
Hit:2 http://ppa.launchpad.net/ondrej/php/ubuntu xenial InRelease
Hit:3 http://de.archive.ubuntu.com/ubuntu xenial InRelease
Hit:4 http://de.archive.ubuntu.com/ubuntu xenial-updates InRelease
Hit:5 http://ppa.launchpad.net/vbernat/haproxy-1.8/ubuntu xenial 
InRelease
Hit:6 http://de.archive.ubuntu.com/ubuntu xenial-backports InRelease
Ign:7 http://nginx.org/packages/mainline/debian xenial InRelease
Ign:8 http://nginx.org/packages/mainline/debian xenial Release
Hit:9 http://packages.nginx.org/unit/ubuntu xenial InRelease
Ign:10 http://nginx.org/packages/mainline/debian xenial/nginx Sources
Ign:11 http://nginx.org/packages/mainline/debian xenial/nginx amd64 
Packages
Ign:12 http://nginx.org/packages/mainline/debian xenial/nginx all 
Packages
Ign:13 http://nginx.org/packages/mainline/debian xenial/nginx 
Translation-en_US
Ign:14 http://nginx.org/packages/mainline/debian xenial/nginx 
Translation-en
Ign:10 http://nginx.org/packages/mainline/debian xenial/nginx Sources
Ign:11 http://nginx.org/packages/mainline/debian xenial/nginx amd64 
Packages
Ign:12 http://nginx.org/packages/mainline/debian xenial/nginx all 
Packages
Ign:13 http://nginx.org/packages/mainline/debian xenial/nginx 
Translation-en_US
Ign:14 http://nginx.org/packages/mainline/debian xenial/nginx 
Translation-en
Ign:10 http://nginx.org/packages/mainline/debian xenial/nginx Sources
Ign:11 http://nginx.org/packages/mainline/debian xenial/nginx amd64 
Packages
Ign:12 http://nginx.org/packages/mainline/debian xenial/nginx all 
Packages
Ign:13 http://nginx.org/packages/mainline/debian xenial/nginx 
Translation-en_US
Ign:14 http://nginx.org/packages/mainline/debian xenial/nginx 
Translation-en
Ign:10 http://nginx.org/packages/mainline/debian xenial/nginx Sources
Ign:11 http://nginx.org/packages/mainline/debian xenial/nginx amd64 
Packages
Ign:12 http://nginx.org/packages/mainline/debian xenial/nginx all 
Packages
Ign:13 http://nginx.org/packages/mainline/debian xenial/nginx 
Translation-en_US
Ign:14 http://nginx.org/packages/mainline/debian xenial/nginx 
Translation-en
Ign:10 http://nginx.org/packages/mainline/debian xenial/nginx Sources
Ign:11 http://nginx.org/packages/mainline/debian xenial/nginx amd64 
Packages
Ign:12 http://nginx.org/packages/mainline/debian xenial/nginx all 
Packages
Ign:13 http://nginx.org/packages/mainline/debian xenial/nginx 
Translation-en_US
Ign:14 http://nginx.org/packages/mainline/debian xenial/nginx 
Translation-en
Err:10 http://nginx.org/packages/mainline/debian xenial/nginx Sources
   404 Not Found [IP: 206.251.255.63 80]
Ign:11 http://nginx.org/packages/mainline/debian xenial/nginx amd64 
Packages
Ign:12 http://nginx.org/packages/mainline/debian xenial/nginx all 
Packages
Ign:13 http://nginx.org/packages/mainline/debian xenial/nginx 
Translation-en_US
Ign:14 http://nginx.org/packages/mainline/debian xenial/nginx 
Translation-en
Fetched 102 kB in 5s (17.7 kB/s)
Reading package lists... Done
W: The repository 'http://nginx.org/packages/mainline/debian xenial 
Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore 
potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user 
configuration details.
E: Failed to fetch 
http://nginx.org/packages/mainline/debian/dists/xenial/nginx/source/Sources 
404 Not Found [IP: 206.251.255.63 80]
E: Some index files failed to download. They have been ignored, or old 
ones used instead.
####

lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04.3 LTS
Release: 16.04
Codename: xenial

Best regards
Aleks