• KOReader version: v2024.07-229-gcba79bca1_2024-10-02

There is a mistake in the word "current" - one letter R:

Export all notes in curent book
https://github.com/koreader/koreader/blob/master/plugins/exporter.koplugin/main.lua#L296

But here "current" is correct:

Export all notes in current book
https://github.com/koreader/koreader/blob/master/plugins/exporter.koplugin/main.lua#L129