Meu computador não atualiza e, em vez disso, me dá esses erros. Por favor, ajude se você puder. Meu sistema operacional é o Ubuntu 20.04.3 Focal Fossa
Hit:1 http://nz.archive.ubuntu.com/ubuntu focal InRelease
Hit:2 http://nz.archive.ubuntu.com/ubuntu focal-updates InRelease
Hit:3 http://nz.archive.ubuntu.com/ubuntu focal-backports InRelease
Hit:4 http://security.ubuntu.com/ubuntu focal-security InRelease
Hit:5 http://ppa.launchpad.net/kdenlive/kdenlive-stable/ubuntu focal InRelease
Err:5 http://ppa.launchpad.net/kdenlive/kdenlive-stable/ubuntu focal InRelease
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 2763B0EE7709FE97
Reading package lists... Done
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://ppa.launchpad.net/kdenlive/kdenlive-stable/ubuntu focal InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 2763B0EE7709FE97
W: Failed to fetch http://ppa.launchpad.net/kdenlive/kdenlive-stable/ubuntu/dists/focal/InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 2763B0EE7709FE97
W: Some index files failed to download. They have been ignored, or old ones used instead.
E quando tento atualizar do atualizador de software.
Você deve remover e adicionar novamente o PPA mencionado usando os comandos abaixo:
e, em seguida, instale as atualizações necessárias