Arduino: 1.8.9 (Windows 10), Board: "Arduino Nano, ATmega328P" In file included from C:\Users\oddw2\Documents\Arduino\libraries\grbl\grbl.h:46:0, from C:\Users\oddw2 ...

I was trying to upload Blinky. I have made no changes to the example code. Arduino: 1.8.3 (Windows 10), Board: "Arduino/Genuino Uno" C:\Program Files (x86)\Arduino\arduino-builder -dump-prefs ...

To fix the Error compiling for board Arduino/Genuino Uno error, make sure you've selected the right board and install any missing Arduboy games.