$sudo apt-get update && sudo apt-get upgrade
Get:1 http://nl.archive.ubuntu.com/ubuntu groovy InRelease [267 kB]
Hit:2 http://security.ubuntu.com/ubuntu groovy-security InRelease
Hit:3 http://ppa.launchpad.net/papirus/papirus/ubuntu groovy InRelease
Hit:4 http://nl.archive.ubuntu.com/ubuntu groovy-updates InRelease
Hit:5 https://packages.microsoft.com/repos/ms-teams stable InRelease
Hit:6 http://nl.archive.ubuntu.com/ubuntu groovy-backports InRelease
Err:7 http://apt.insync.io/ubuntu groovy InRelease
403 Forbidden [IP: 52.216.28.244 80]
Reading package lists... Done
E: Failed to fetch http://apt.insync.io/ubuntu/dists/groovy/InRelease 403 Forbidden [IP: 52.216.28.244 80]
E: The repository 'http://apt.insync.io/ubuntu groovy 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.
I’m on Ubuntu (Gnome) 20.10 and i’m unable to upgrade due to the above error. Is there any way to resolve this? I’ve tried this, but it doesn’t work. When I try this, I get the following result:
$ sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys ACCAF35C
Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).
Executing: /tmp/apt-key-gpghome.fRT7uBWPtc/gpg.1.sh --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys ACCAF35C
gpg: key A684470CACCAF35C: "Insynchq Inc <services@insynchq.com>" not changed
gpg: Total number processed: 1
gpg: unchanged: 1