SUMMARY Dolphin refuses to display any content, local or remote. STEPS TO REPRODUCE 1. Select HOME, ROOT or any other local/remote directory 2. Closing Dolphin does not help. 3. OBSERVED RESULT Displays no files. Displays red banner: [Unable to create io-slave. klauncher said: Error loading '/usr/lib/qt/plugins/kf5/kio/file.so'.] File is present. EXPECTED RESULT Display files in requested folder SOFTWARE/OS VERSIONS Dolphin 18.12.0 Linux/KDE Plasma: Arch Linux (x86_64) release 4.19.4-arch1-1-ARCH (available in About System)
Did you do an update recently without rebooting?
Yes, I don't reboot unless changing hardware, kernel or something is 'broken' rendering the system useless. I've just rebooted it and it now works. Is it possible to write updates in a way that does not require reboots?
You do not really need to reboot, but logout of the currently running Plasma session, whenever you are updating Qt or KDE components.
Probably also could have restarted kdeinit
"or something is 'broken' rendering the system useless." I guess this qualifies.