2.7 KiB
was getting this error:
pt@r710:~$ sudo apt update [sudo] password for pt: Hit:1 http://download.virtualbox.org/virtualbox/debian bionic InRelease Hit:2 http://archive.ubuntu.com/ubuntu bionic InRelease Hit:3 https://dl.yarnpkg.com/debian stable InRelease Hit:4 https://deb.nodesource.com/node_13.x bionic InRelease Hit:5 http://apt.postgresql.org/pub/repos/apt bionic-pgdg InRelease Hit:6 http://ppa.launchpad.net/certbot/certbot/ubuntu bionic InRelease Get:7 http://archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB] Hit:8 https://download.jitsi.org stable/ InRelease Ign:9 https://dl.packager.io/srv/deb/pghero/pghero/master/ubuntu 18.04 InRelease Get:10 http://archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB] Get:11 https://cloud.r-project.org/bin/linux/ubuntu bionic-cran40/ InRelease [3,626 B] Get:12 http://archive.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB] Get:13 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages [1,726 kB] Err:11 https://cloud.r-project.org/bin/linux/ubuntu bionic-cran40/ InRelease The following signatures were invalid: EXPKEYSIG 51716619E084DAB9 Michael Rutter marutter@gmail.com Ign:14 https://download.webmin.com/download/repository sarge InRelease Hit:15 https://download.webmin.com/download/repository sarge Release Get:17 https://dl.packager.io/srv/deb/pghero/pghero/master/ubuntu 18.04 Release Get:19 http://archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages [1,680 kB] Fetched 3,663 kB in 2s (1,627 kB/s) Reading package lists... Done Building dependency tree Reading state information... Done All packages are up to date. W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://cloud.r-project.org/bin/linux/ubuntu bionic-cran40/ InRelease: The following signatures were invalid: EXPKEYSIG 51716619E084DAB9 Michael Rutter marutter@gmail.com W: Failed to fetch https://cloud.r-project.org/bin/linux/ubuntu/bionic-cran40/InRelease The following signatures were invalid: EXPKEYSIG 51716619E084DAB9 Michael Rutter marutter@gmail.com W: Some index files failed to download. They have been ignored, or old ones used instead.
ran the following command using key signature from above. it is supposed to import the gpg key from the target repository into the local database. askubunut
pt@r710:~$ gpg --keyserver keyserver.ubuntu.com --recv-keys 51716619E084DAB9 gpg: key 51716619E084DAB9: public key "Michael Rutter marutter@gmail.com" imported gpg: Total number processed: 1 gpg: imported: 1