That's really strange. According to the error message, it says it cannot find the png file located in Graphics/Pictures to display the picture of Rui. However, I checked the file I uploaded and the picture is clearly there. I even downloaded my file again and tried running it from there, and it still worked for me.
I did upload a new version, here's the link:
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I found a couple untranslated lines, and cleaned up some typos / word-wrap issues with this version. I also play-tested it all the way until the end, so I know I can at least play it all the way through. However, I'm not sure why your version can't locate the pictures. I did try including the game project file itself in this version, but I don't see why that would help since y'all aren't trying to open this game in RPG Maker itself.