https://www.pcgamer.com/kingdom-come-deliverance-141-patch-addresses-corrupted-saves-problem/

The Kingdom Come: Deliverance 1.4 patch arrived yesterday, featuring new hair and beard mechanics, Easter eggs (actual Easter eggs, not the videogame type we generally deal with), NPC resurrections, and 200 "major" bug fixes. Unfortunately, it also brought with it a wee little problem that resulted in "a distinct possibility that the save files created with version 1.4 might be corrupted." Thus, the Kingdom Come: Deliverance 1.41 patch is out today. 

The 1.41 patch notes are on the vague side, saying only that it fixes errors that arose "due to obsolete data having been published as part of 1.4." Developer Warhorse Studios didn't indicate the actual likelihood of save files being corrupted under the 1.4 update, but the words "distinct possibility" are generally not ones you want to read when they're attached to bad news.