zoneminder xenial ppa

Somewhat new linux user and still trying to wrap my head around a few things here's one hopefully i can get some help with:

what i did-
$ sudo add-apt-repository ppa:iconnor/zoneminder
[sudo] password for chris:
 Stable releases of ZoneMinder.

This is to provide newer official packages for older ubuntu dists.
 More info: https://launchpad.net/~iconnor/+archive/ubuntu/zoneminder
Press [ENTER] to continue or ctrl-c to cancel adding it

gpg: keyring `/tmp/tmp0bglr2w4/secring.gpg' created
gpg: keyring `/tmp/tmp0bglr2w4/pubring.gpg' created
gpg: requesting key 776FFB04 from hkp server keyserver.ubuntu.com
gpg: /tmp/tmp0bglr2w4/trustdb.gpg: trustdb created
gpg: key 776FFB04: public key "Launchpad PPA for Isaac Connor" imported
gpg: Total number processed: 1
gpg: imported: 1 (RSA: 1)
OK

what i got doing update:

W: The repository 'http://ppa.launchpad.net/iconnor/zoneminder/ubuntu 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://ppa.launchpad.net/iconnor/zoneminder/ubuntu/dists/xenial/main/binary-amd64/Packages 404 Not Found
E: Failed to fetch http://ppa.launchpad.net/iconnor/zoneminder/ubuntu/dists/xenial/main/binary-i386/Packages 404 Not Found

what did i miss / do wrong? or ?

system :
ubuntu server 16.04 lts 64bit (xenial)

(yea i know, jump into linux heyyy lets start with a server.... smrt.. kinda like learning to ride a horse by entering a rodeo)