ERROR message, I don't know why

Hi there!
I am trying to upload any sketch with the library keyboard but an ERROR message doesn't let me.
here is what's happening.

#include <Keyboard.h>

void setup()
{
Keyboard.begin();
}
void loop()
{
//empty
}

ERROR message:
Keyboard not found. Your sketch includes the line '#include <Keyboard.h>'?

what can I do to eliminate this trouble?

Take a look at the examples which come with the library.

I already done it, but the message still the same. maybe is the problem in settings, or another thing.

Did you install the library properly?

The keyboard library only works on Arduinos with native USB: Micro, Due, Teensy etc...