So localedigisparkkeyboard.h does not have defined altgr trying to use the danish da_dk.lang
C:\Users\danil\AppData\Local\Arduino15\packages\digistump\hardware\avr\1.6.7\libraries\DigisparkKeyboard/LocaleDigiKeyboard.h:138:8: error: 'ALTGR' was not declared in this scope
0x30|ALTGR, // ~