N: See apt-secure(8) manpage for repository creation and user configuration details. Your Name (required): Already registered on this website Enter your username above to login during posting or leave this form again and Click here to login. N: Updating from such a repository can't be done securely, and is therefore disabled by default. A new guide has been published: How To Install Brave Browser on Ubuntu 20.04 LTS idroot published a tutorial about installing Brave Browser on Ubuntu 20.04 LTS. W: GPG error: stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 0B31DBA06A8A26F9Į: The repository ' stable InRelease' is not signed. The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 0B31DBA06A8A26F9 I am trying to install some packages using the sudo apt-get install, I had already removed the brave browser but still it is showing up in the error message and I cannot install any package, and whenever I run the command I am getting the following error: Ign:1 cdrom://Ubuntu 20.04.2.0 LTS _Focal Fossa_ - Release amd64 (20210209.1) focal InRelease I use Ubuntu 20.04 LTS with Brave browser just uninstalled.

Download brave browser for ubuntu 20.04