This error has the same roots, but thanks for reporting!
As for save files, you can send it by email yummy@manka.games or to Asmodeev on our Discord server https://discord.gg/EGZXXaY
Saves are stored in the `game/saves` directory, and named like `1-1-LT1.save` where the first number is the number of page and the second number is the slot of the save. So 1-1-LT1 it's the first save on the first page, 1-2-LT1 is the second save on the first page, and so on.