I have tried several times, I copy the whole project to the desktop. And test it before I put it into a a zip. And the error is not there.
But in the default directory, "C:\Users\Home\Documents\RMMZ" it bugs out only in this game folder "\My Game Project".
But if i copy the book plugins and .json to a different project, it works fine. Only thing I can think of is that folder hates me lol.
So I copied all the files inside, made a brand new folder called "MyGameProject" and pasted them in there. Now it works.
So sorry for any trouble. It's just that one folder. I even deleted all the files, and imported new files from another working project.
And it still bugs out even knowing it was working in the other folder.