Attempting to ‘apt-get update’ I receive “An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: debian-ports:/ 2022-12-25 08:48:46 - snapshot.debian.org unstable InRelease: The following signatures were invalid: EXPKEYSIG E852514F5DF312F6 Debian Ports Archive Automatic Signing Key (2022) email@example.com”
Please advise possible resolution.
Because we are using the Snapshot version of debian, we can’t apt update and apt upgrade. Refer to the official documentation:
Snapshot images have an expiration date, and can be made apt updateable by replacing the sources in /etc/apt/sources.list, but we can’t guarantee that the system will still be stable or even bootable after updating; see