Detected operating system as Ubuntu/focal.
Checking for curl...
Detected curl...
Checking for gpg...
Detected gpg...
Running apt-get update... done.
Installing apt-transport-https... done.
Installing /etc/apt/sources.list.d/gyazo_gyazo-for-linux.list...done.
Importing packagecloud gpg key... done.
Running apt-get update... done.
The repository is setup! You can now install packages.
sudo apt-get update
Hit:1 http://security.ubuntu.com/ubuntu focal-security InRelease
Hit:2 http://gb.archive.ubuntu.com/ubuntu focal InRelease
Hit:3 http://archive.canonical.com/ubuntu focal InRelease
Hit:4 http://ppa.launchpad.net/yannubuntu/boot-repair/ubuntu focal InRelease
Hit:5 http://gb.archive.ubuntu.com/ubuntu focal-updates InRelease
Hit:6 http://dl.google.com/linux/chrome/deb stable InRelease
Hit:7 http://gb.archive.ubuntu.com/ubuntu focal-backports InRelease
Hit:8 http://download.opensuse.org/repositories/home:/pzz/xUbuntu_20.04 InRelease
Hit:9 https://download.virtualbox.org/virtualbox/debian focal InRelease
Get:10 https://packagecloud.io/gyazo/gyazo-for-linux/ubuntu focal InRelease [23.4 kB]
Err:10 https://packagecloud.io/gyazo/gyazo-for-linux/ubuntu focal InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 9D0A7D764367AC46
Reading package lists... Done
W: GPG error: https://packagecloud.io/gyazo/gyazo-for-linux/ubuntu focal InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 9D0A7D764367AC46
E: The repository 'https://packagecloud.io/gyazo/gyazo-for-linux/ubuntu focal InRelease' is not signed.
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.
Just reinstalling my system and came across a gpg issue, despite the key being added correctly.
curl -s https://packagecloud.io/install/repositories/gyazo/gyazo-for-linux/script.deb.sh | sudo bash
sudo apt-get update