SdFatUtil.h DOESN'T WORK

if someone can try this sketchbook and make it work I'd like to know how the heck you did it

it complains about SdFatUtil not existing.

So I googled my problem, everyone is telling me I am missing reference to SDFat, I installed SDFat, it still complains about SdFatUtil doesn't exist.

I don't understand.

Arduino 1.8.3

any help is appreciated. Thanks

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