Accessed unknown getter

[Basenotes]

I'm following Kiers tutorial that he posted a few years back, and I'm getting this error when I get to the end of Part 10. I've looked and looked for hours but I can't work out what I'm doing wrong. (Im adapting the code for reviews so it's called Reviews/Review rather than Pad/Note)

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I've got to the end of the video where it is supposed to list all the notes/reviews by a particular user, but I'm getting this error each time :

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Template errors

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Accessed unknown getter

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