The kubuntu-notification-helper package is not part of the KDE repositories, so I doubt any KDE developer can help here. Additionally, following the downstream report, the information which of the notifications is causing the error requested in comment 24 is still unclear (comment 26 and 27 are contradicting).
The kubuntu- notification- helper package is not part of the KDE repositories, so I doubt any KDE developer can help here. Additionally, following the downstream report, the information which of the notifications is causing the error requested in comment 24 is still unclear (comment 26 and 27 are contradicting).