Problem with library: cannot open source file "Button.h" (dependency of "depend.h")

I have a problem with my libraries since i made some changes in the file structure.
My project was working fine with the following structure:

lib:
      ArduinoUtils:
           Timer:
               Timer.h
               Timer.cpp
           Button:
               Button.h
               Button.cpp

           CodeBCD:
               CodeBCD.h
               CodeBCD.cpp
 src:
         main.cpp
         depend.h

depend.h contains all the dependencies:

#include <Arduino.h>
#include <EEPROM.h>

#include <Button.h>

The project worked just fine when it was like that.
I have a repository in github called ArduinoUtils that contains the three libraries a i was using, so a deleted lib/Time, lib/Button, and lib/CodeBCD. Then i downloaded ArduinoUtils inside the lib directory.
So now the lib directory is like this:

lib:
      ArduinoUtils:
           Timer:
               Timer.h
               Timer.cpp
           Button:
               Button.h
               Button.cpp

           CodeBCD:
               CodeBCD.h
               CodeBCD.cpp

Now when i built the project platformio says that the file doesn’t exist:

src/depend.h:4:20: fatal error: Button.h: No such file or directory

`

Solved!!

I just needed to add :

lib_extra_dirs = lib/ArduinoUtils/

To platformio.ini