I was playing the piano and when I wanted to get back to talk with Monika, Renpy throws me this error.

I click "_Quit_" because if I clicked "_Ignore_" it says that maybe it will lead to others errors.
That's all.
What were your steps exactly?
@ThePotatoGuy
I clicked the _Play_ button then I selected the _piano_, after some minutes, I "exit" because I wanted to see if Monika have new unseen text, so I exit the _piano_, then the game "freeze" a bit and finally Renpy throws me that error.
When this happened I just take a quick screenshot, post it here as an issue and close the game.
_Note:_ Today, _Monika_ didn't have new unseen text, this is weird because She always have at least one new unseen text. I don't know if is because the error or because there are no more new text to load for now.
PD: Sorry, for the late response.
Can you upload your persistent file here? here is a guide.
@ThePotatoGuy
Here it is:
persistent file.zip
BTW about the note, it seems Monika doesn't have more new unseen text, is this normal?
I'm not 100% on the cause here, so im going to leave this issue open in case other people get it too.
It's been 27 days and no one else has gotten the issue. I think it's safe to close it. We can always reference it on any other tickets that are opened.