Unable to add Zoneminder PPA - no release file

The PPA doesn't support Groovy
http://ppa.launchpad.net/iconnor/zoneminder-master/ubuntu/dists/

If you have to ask questions like this then you probably shouldn't be using pre-releases. Groovy is not ready and not even remotely stable. If you are happy to put up with feature holes and bugs and want to report issues to get the OS ready for release in October then by all means use Groovy but don't expect a smooth ride.

If you want an OS that works and runs as expected then I suggest you wipe the install off and do a clean install of Focal (Ubuntu 20.04) which is LTS and supported 5 years wheras Groovy is only supported for 9 months,

The PPA doesn't even support Focal....

Yes, I understand. But when I add the repository for zoneminder-1.32 or zoneminder-1.34 or zoneminder-master I always get the message with the groovy Release. It seems that all repositorys linked to the groovy release.

add-apt-repository ppa:iconnor/zoneminder-1.34
get the error:
The repository 'http://ppa.launchpad.net/iconnor/zoneminder-master/ubuntu groovy Release' does not have a Release file.

Yes. Click the link in my first reply. These are the supported releases by the PPA. Not all PPAs support all releases and they don't have to. It's the perogative of the PPA maintainer as to which releases her/she wants to support.

I don't get it...
My system is running with Ubuntu 18.04 bionic. In the link with the supported releases is Ubuntu Bionic 18.04 available. that fits for me. Do I have a think mistake?

But your output in the original post is

http://ppa.launchpad.net/iconnor/zoneminder-master/ubuntu groovy Release
  404 Not Found [IP: 91.189.95.83 80]

Groovy isn't Bionic.

What is the output of:

lsb_release -a; uname -a

Thanks

add-apt-repository ppa:iconnor/zoneminder-master
 These are snapshots of the master branch from https://github.com/ZoneMinder/ZoneMinder

If you would like to make a donation to directly support this ppa, you may do so by sending paypal to paypal @ connortechnology.com, become a patron at https://www.patreon.com/zoneminder or send digital coins to:

BTC: 143XJVxDQ1c1HF4vixuCZAqG6LDhSBQFwU
BCH: qpk8a4938am7ex37k2yfykyglkxg6v46v5jy8qw05c
ETH: 0xA23b82d94A3589A866529DE9db05E3ba8a37fed8
ECH: 0x93FC917d1B9d3EA6c83fC5E2b48C7314B00D9407
LTC: M9QT3SUywaEcPwMwvu9rFLVmMuugQzdPWK
 More info: https://launchpad.net/~iconnor/+archive/ubuntu/zoneminder-master
Press [ENTER] to continue or Ctrl-c to cancel adding it.

Hit:2 http://ports.ubuntu.com bionic InRelease
Hit:3 http://ports.ubuntu.com bionic-security InRelease
Ign:4 http://ppa.launchpad.net/iconnor/zoneminder-master/ubuntu groovy InRelease
Hit:5 http://ports.ubuntu.com bionic-updates InRelease
Hit:6 http://ports.ubuntu.com bionic-backports InRelease
Err:7 http://ppa.launchpad.net/iconnor/zoneminder-master/ubuntu groovy Release
  404 Not Found [IP: 91.189.95.83 80]
Hit:8 http://ports.ubuntu.com/ubuntu-ports bionic InRelease
Hit:1 https://apt.armbian.com bionic InRelease
Reading package lists... Done
E: The repository 'http://ppa.launchpad.net/iconnor/zoneminder-master/ubuntu groovy 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.

lsb_release -a; uname -a

Distributor ID: Ubuntu
Description: Ubuntu 18.04.4 LTS
Release: 18.04
Codename: bionic

Linux odroidxu4 4.14.150-odroidxu4 #2 SMP PREEMPT Mon Oct 28 08:07:45 CET 2019 armv7l armv7l armv7l GNU/Linux

Thanks for your help!

What is the output of:

sudo grep zone /etc/apt/sources.list.d/*
sudo grep zone /etc/apt/sources.list

(One may output nothing)

Thanks

grep zone /etc/apt/sources.list.d/*

grep: /etc/apt/sources.list.d/d: Is a directory
/etc/apt/sources.list.d/iconnor-ubuntu-zoneminder-master-groovy.list:deb http://ppa.launchpad.net/iconnor/zoneminder-master/ubuntu groovy main
/etc/apt/sources.list.d/iconnor-ubuntu-zoneminder-master-groovy.list:# deb-src http://ppa.launchpad.net/iconnor/zoneminder-master/ubuntu groovy main

The second was without output.

great! it works. thanks a lot!

Thanks actionparsnip, that solved my question.