Issue The Kolab GPG Error has returned

[LRLD]

Server operating system version

Ubuntu 24.04.4 LTS

Plesk version and microupdate number

Plesk Obsidian 18.0.78 Update #4 Web Pro Edition

Hi,

@Sebahat.hadzhi The Kolab GPG Error has returned, it's been like this most of the week...

Error: Unable to get packages list: 2026-06-21 12:06:38 INFO: pum is called with arguments: ['--list', '--repo-info', '--json'] /usr/lib/python3/dist-packages/apt/cache.py:562: Warning: W:An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: Index of /repos/Kolab:/16/Ubuntu_24.04_Plesk_17 InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6DC08608F9D0300D, W:Failed to fetch https://mirror.apheleia-it.ch/repos/Kolab:/16/Ubuntu_24.04_Plesk_17/InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 6DC08608F9D0300D, W:Some index files failed to download. They have been ignored, or old ones used instead. res = self._cache.update(fetch_progress, slist, pulse_interval) 2026-06-21 12:06:39 ERROR: Apt cache fetch failed. Try to run the `apt-get update` command. 2026-06-21 12:06:39 ERROR: 2026-06-21 12:06:39 ERROR: Exited with returncode 1.

See previous thread PPE - repository GPG Error
Thanks in advance for your help.

LD

 

[Sebahat.hadzhi]

Hi, there. Thank you for the report. I will double-check with our team if there's a known issue and get back to as soon as possible. Thanks for your patience in the meantime.