'Visual Studio can't open eigen3 file (C++)?

Trying to re-build a Maya plugin in Visual Studio on Windows 10 and in the including part of the C++ connecting maya parts works fine but when I try to include eigen3 it gives an E1696 Error followed by a C1083 Error, saying that it cannot open source file?

I've found other people having similar problems and saw that I needed to add the eigen3 directory in the C++ General settings which I've done but still have the same issue? Also tried to change it to #include <eigen3/Eigen/Dense> with no luck?

Thanks so much! Really stumped here!

#include <maya/MStringArray.h>

#include <Eigen/Dense>
#include <Eigen/LU>


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