andi@aktux:~$ koreader 
---------------------------------------------
                launching...
  _  _____  ____                _
 | |/ / _ \|  _ \ ___  __ _  __| | ___ _ __
 | ' / | | | |_) / _ \/ _` |/ _` |/ _ \ '__|
 | . \ |_| |  _ <  __/ (_| | (_| |  __/ |
 |_|\_\___/|_| \_\___|\__,_|\__,_|\___|_|

 It's a scroll... It's a codex... It's KOReader!

 [*] Current time: 10/05/22-08:22:53
 [*] Version: v2022.08-55-g68b26c3a_2022-10-04

ffi.load: libs/libutf8proc.so.2
/usr/lib/koreader/luajit: frontend/luadefaults.lua:57: Failed reading /home/andi/.config/koreader/defaults.lua
stack traceback:
	[C]: in function 'error'
	frontend/luadefaults.lua:57: in function 'open'
	./reader.lua:36: in main chunk
	[C]: at 0x558e417fb330

rm -rf .config/koreader
koreader