Error within dolphin or konqueror:
Unable to create io-slave. klauncher said: Error loading '/usr/lib64/qt5/plugins/kf5/kio/file.so'
First of all, check that the said library does exist:
$ ls /usr/lib64/qt5/plugins/kf5/kio/file.so
/usr/lib64/qt5/plugins/kf5/kio/file.so
If it does not, then investigate further...
If it does, it is a benign, easily recoverable error.
