Multiple libraries were found for "Scheduler.h"
Used: C:\Users\Gustavo Solano\Documents\Arduino\libraries\Scheduler
Not used: C:\Program Files (x86)\Arduino\libraries\Scheduler
You have the header file in two places. They are probably not the same header file so the syntax you use for the scheduler object does not match what is in the header file being used.
Decide which one is the right one and delete other one.