i just tried to install LibreWolf on Ubuntu Focal 20.04 ... failed due to sig check: Ign:6 https://deb.librewolf.net focal InRelease Err:7 https://deb.librewolf.net focal Release Certificate verification failed: The certificate is NOT trusted. The certificate chain uses expired certificate. Could not handshake: Error in the certificate verification. [IP: 130.61.181.106 443] Reading package lists... Done E: The repository 'https://deb.librewolf.net focal Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. ... ***Fixed by installing latest update to ```ca-certificates```*** .. Please add this important,vital step to the INSTALLATION instructions at both: 1. https://librewolf.net/installation/debian/ 2. https://deb.librewolf.net/ (the latter being referenced in Apt/Dpkg) i.e., it should read to add not only: ``` sudo apt install -y wget gnupg lsb-release apt-transport-https ``` but to append to that line, ```ca-certificates``` and any/other affected distros, maybe ?