In Konsole, Asian file names are displayed as escaped sequences

I'm using Arch Linux with KDE Plasma. The system's locale is English. Korean/Japanese fonts are installed. In Dolphin, files with korean/japanese names are shown correctly. But in Konsole, their names are displayed as espaped sequences like ''$'\355\205\214\354\212\244\355\212\270''.txt' In Konsole's profile, the default encoding was already set to UTF-8. How to solve? --- The output of strings /proc/$$/environ | grep -e LANG -e LANGUAGE -e LC_ | sort LANG=en_GB.UTF-8 LANGUAGE=en_GB LC_ADDRESS=en_GB.UTF-8 LC_MEASUREMENT=en_GB.UTF-8 LC_MONETARY=en_GB.UTF-8 LC_NAME=en_GB.UTF-8 LC_NUMERIC=en_GB.UTF-8 LC_PAPER=en_GB.UTF-8 LC_TELEPHONE=en_GB.UTF-8 LC_TIME=en_GB.UTF-8 The output of locale locale: Cannot set LC_CTYPE to default locale: No such file or directory locale: Cannot set LC_MESSAGES to default locale: No such file or directory locale: Cannot set LC_ALL to default locale: No such file or directory LANG=en_GB.UTF-8 LC_CTYPE="en_GB.UTF-8" LC_NUMERIC=en_GB.UTF-8 LC_TIME=en_GB.UTF-8 LC_COLLATE="en_GB.UTF-8" LC_MONETARY=en_GB.UTF-8 LC_MESSAGES="en_GB.UTF-8" LC_PAPER=en_GB.UTF-8 LC_NAME=en_GB.UTF-8 LC_ADDRESS=en_GB.UTF-8 LC_TELEPHONE=en_GB.UTF-8 LC_MEASUREMENT=en_GB.UTF-8 LC_IDENTIFICATION="en_GB.UTF-8" LC_ALL= --- locale charmap was showing some sort of ASCII. The problem was solved when it was changed to UTF-8. I don't remember how I did it exactly, because I tried a few things.