I tried to start the game, but around the second night of the prologue I got an error that sends me back to the title screen. I tried to skip the prologue, only to get an error that forced me to do the prologue, which wraps around to the first issue. ;-;
Without a more detailed description of the error, there's not much I can do. I can assume it's a gallery bug because, before the second night, you are released into the open world, where the locked secret cards from the gallery should appear. To fix this error, simply create a save and load on it. Or delete the "persistent" file from your saves folder. If this is not the problem, please send it to the Discord channel in the bug thread, and I'll look into it.