I figured it out at the end! Thx!Dude I think you mix thing's up. Season 1 and Season 2 which contains ep1 to ep8 is a different file to Season 3 which contains interlude, ep9 and ep10. The patch you installed is for season 3, that is why you receive an error.
This is interlude, ep9 and ep10
View attachment 4416036
This ep 1 to 8
View attachment 4416037
Download season 3 and the patch then run the game. At the start menu you will see and import icon, click it to carry over your previous save data from ep 1 to 8