I trying studying in the learn opengl site and i have been in the chapter of loading models but the implementation of the code is not going ok because of the stb_image.h, when i try to put the library in the model.h file it does not work, giving the error of multiple initialization.

scr/aplication.cpp

#include "../Model/Model.h"
...

scr/stb_image.cpp

#define STB_IMAGE_IMPLEMENTATION
#include <stb_image.h>

Model/Model.h

#include <stb_image.h>
...

In the previous chapters i was using.

scr/aplicaition.cpp

#define STB_IMAGE_IMPLEMENTATION
#include <stb_image.h>
...

But i checked the code of the learn openGl and corrected, but i don’t understand why the stb_image doesn’t work has other.h and gives this liking error when i try to implement in different files.