Debouncer.h and BlinkTask.h define STATE_ON to different values.
In file included from****:9:0:
***/Arduino/libraries/SoftTimer/src/Debouncer.h:41:0: warning: "STATE_ON" redefined
#define STATE_ON 2
^
In file included from ***/Arduino/libraries/SoftTimer/src/Heartbeat.h:31:0,
from****:7:
/***/Arduino/libraries/SoftTimer/src/BlinkTask.h:35:0: note: this is the location of the previous definition
#define STATE_ON 1
Debouncer.h and BlinkTask.h define STATE_ON to different values.