Resolved 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.

 

[Sebahat.hadzhi]

Hi, @LRLD. There was an issue with the repository signatures, which has been fixed now. Thank you for bringing our attention to it. Please give it another try and let me know if there are any further issues.