Ign:16 http://ddebs.ubuntu.com focal-updates Release.gpg
Err:17 http://ddebs.ubuntu.com focal Release.gpg
The following signatures were invalid: EXPKEYSIG C8CAB6595FDFF622 Ubuntu Debug Symbol Archive Automatic Signing Key (2016) <email address hidden>
Err:19 http://ddebs.ubuntu.com focal-proposed Release.gpg
The following signatures were invalid: EXPKEYSIG C8CAB6595FDFF622 Ubuntu Debug Symbol Archive Automatic Signing Key (2016) <email address hidden>
Hit:18 https://packagecloud.io/slacktechnologies/slack/debian jessie InRelease
Reading package lists... Done
E: The repository 'http://ddebs.ubuntu.com focal-updates Release' is no longer signed.
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.
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://ddebs.ubuntu.com focal Release: The following signatures were invalid: EXPKEYSIG C8CAB6595FDFF622 Ubuntu Debug Symbol Archive Automatic Signing Key (2016) <email address hidden>
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://ddebs.ubuntu.com focal-proposed Release: The following signatures were invalid: EXPKEYSIG C8CAB6595FDFF622 Ubuntu Debug Symbol Archive Automatic Signing Key (2016) <email address hidden>
I have a similar error
Ign:16 http:// ddebs.ubuntu. com focal-updates Release.gpg ddebs.ubuntu. com focal Release.gpg ddebs.ubuntu. com focal-proposed Release.gpg /packagecloud. io/slacktechnol ogies/slack/ debian jessie InRelease ddebs.ubuntu. com focal-updates Release' is no longer signed. ddebs.ubuntu. com focal Release: The following signatures were invalid: EXPKEYSIG C8CAB6595FDFF622 Ubuntu Debug Symbol Archive Automatic Signing Key (2016) <email address hidden> ddebs.ubuntu. com focal-proposed Release: The following signatures were invalid: EXPKEYSIG C8CAB6595FDFF622 Ubuntu Debug Symbol Archive Automatic Signing Key (2016) <email address hidden>
Err:17 http://
The following signatures were invalid: EXPKEYSIG C8CAB6595FDFF622 Ubuntu Debug Symbol Archive Automatic Signing Key (2016) <email address hidden>
Err:19 http://
The following signatures were invalid: EXPKEYSIG C8CAB6595FDFF622 Ubuntu Debug Symbol Archive Automatic Signing Key (2016) <email address hidden>
Hit:18 https:/
Reading package lists... Done
E: The repository 'http://
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.
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://