what system are you on? Is this after saving at the save points?
Windows and yes
try posting the contents of C:\Users\YOURNAME\AppData\LocalLow\Sean Han Tani\All Our Asias\output_log.txt , after saving the game unsuccessfully and quitting the game.
I have no clue what I'm doing. Sorry, I'm just not good with these sort of things.
You just need to navigate to that file in windows explorer, open it in Notepad and copy paste the contents here - do it after trying to save your game and then quitting the game.