1) when you follow dio and potemkin says "it's midnight rn"
2) when you enter the hottubHey there! Which version of the game did you get this error message from? If you selected the TestBuild that was from a early build and was incorrectly named when I uploaded the original file. It may have improper functions. I'll remove it for now. Thank you for bringing this up! I'll update the game to 0.9.8A either tonight or tomorrow that will have a lot of bugfixes.
The hot tub 'relax' scene was edited briefly and some graphics were heavily enhanced with a new potential character being introduced in that area. This area was originally blocked off so kudos to you for finding the right thing to activate the door being 'unlocked.'
Edit: Added a safe check for certain scenes to show the new characters and the correct graphics. Added a safe check to prevent blocking from final fight with Dio. If you'd like I can add you to the credits for testing , appreciate it and enjoy playing!
ohhh yes, that one is a bit outdated. I would recommend keeping a copy of your save file and downloading the latest version , which should also include the New game+ content. There will also be a port system similar to souls games where you'd teleport to previously visited bonfires. There might be a chance to find something returning to these places.