KDE is an international technology team creating user-friendly free and open source software for desktop and portable computing. KDE’s software runs on GNU/Linux, BSD and other operating systems, including Windows.
If you encounter a bug, proceed to https://bugs.kde.org/, check whether it has been reported.
If it hasn't, report it yourself.
PLEASE THINK CAREFULLY BEFORE POSTING HERE.
Developers do not look for reports on social media, so they will not see it and all it does is clutter up the feed.
What is this message on the lock screen? I get this at really random times and very rarely. Is this a bug? If so, I'll report it. If it's not a big, then what is it?
That can happen if you make a major change such as major update to the binaries (ie a software update) while the screen is locked. Or because the screen "saver" / "locker" crashed.
Occasionally I get this on wake from suspend, doesn't matter if amd or nvidia system.
I just think of it as an annoying kde bug. It's harmless though.
You either reboot or just switch to another tty and unlock the session.
But the others are right, you increase chances of this happening if you updated the kde stack and didn't reboot/relog.