Compilation error

Whenever I try to compile my project, I get error

#include "dict.h" red, saying 'dict.h' file not found .

According to this post, I have to clone the project in

/home/prog2/project

for the header files to work properly. However, when I try to clone it in the path, I get error

fatal: could not create leading directories of '/home/prog2/project3': Operation not supported.

I use a Mac so I have VS code installed locally.

This is what I get once I run make:
0d6f66bae830aba156811e5855533f18dd0828ef