I want to update and upgrade my server (ubuntu 20.04) but this error prevents the update:
404 Not Found [IP: 213.32.5.7 80]
Hit:9 http://sfo1.mirrors.digitalocean.com/mariadb/repo/10.5/ubuntu bionic InRelease
Hit:10 https://packagecloud.io/ookla/speedtest-cli/ubuntu focal InRelease
Reading package lists... Done
E: The repository 'http://mariadb.mirrors.ovh.net/MariaDB/repo/10.3/ubuntu bionic Release' does not have a Release file.
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.
Despite purging mariadb, the error still occurs. Can anyone help fix?