Missing keys when running apt-update

[Luna the Deer]

Armbianmonitor:

https://paste.armbian.com/nibigepaca

Fairly recently, I've noticed these warnings appearing when running apt update. I have tried importing the keys from the repositories in question, but that has not remediated the issue.

 

root@modron:/home/luna# apt update
Hit:1 http://deb.debian.org/debian trixie InRelease
Hit:2 http://deb.debian.org/debian trixie-updates InRelease
Hit:3 http://deb.debian.org/debian trixie-backports InRelease
Hit:4 http://security.debian.org trixie-security InRelease
Hit:6 https://download.docker.com/linux/debian trixie InRelease
Hit:7 https://github.armbian.com/configng stable InRelease
Get:5 http://armbian.lv.auroradev.org/apt trixie InRelease [62.3 kB]
Err:5 http://armbian.lv.auroradev.org/apt trixie InRelease
  Sub-process /usr/bin/sqv returned an error code (1), error message is: Missing key DF00FAF1C577104B50BF1D0093D6889F9F0E78D5, which is needed to verify signature. Missing key 8CFA83D13EB2181EEF5843E41EB30FAF236099FE, which is needed to verify signature.
Fetched 62.3 kB in 1s (67.6 kB/s)
10 packages can be upgraded. Run 'apt list --upgradable' to see them.
Warning: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. OpenPGP signature verification failed: http://armbian.lv.auroradev.org/apt trixie InRelease: Sub-process /usr/bin/sqv returned an error code (1), error message is: Missing key DF00FAF1C577104B50BF1D0093D6889F9F0E78D5, which is needed to verify signature. Missing key 8CFA83D13EB2181EEF5843E41EB30FAF236099FE, which is needed to verify signature.
Warning: Failed to fetch http://apt.armbian.com/dists/trixie/InRelease  Sub-process /usr/bin/sqv returned an error code (1), error message is: Missing key DF00FAF1C577104B50BF1D0093D6889F9F0E78D5, which is needed to verify signature. Missing key 8CFA83D13EB2181EEF5843E41EB30FAF236099FE, which is needed to verify signature.
Warning: Some index files failed to download. They have been ignored, or old ones used instead.