Une erreur est survenu lors du transfert du croquis

Bonjour.
Une erreur est survenu lors du transfert du croquis
Est ce que quelqu’un peut m’expliquer ?
Merci beaucoup

Arduino : 1.8.12 (Windows 10), Carte : “Arduino Uno”

In file included from C:\Users\MiMi\Documents\Arduino\libraries\grbl/grbl.h:43:0,

from C:\Users\MiMi\Documents\Arduino\libraries\grbl\examples\grblUpload\grblUpload.ino:27:

C:\Users\MiMi\Documents\Arduino\libraries\grbl/nuts_bolts.h:51:0: warning: “max” redefined

#define max(a,b) (((a) > (b)) ? (a) : (b))

In file included from sketch\grblUpload.ino.cpp:1:0:

C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino/Arduino.h:93:0: note: this is the location of the previous definition

#define max(a,b) ((a)>(b)?(a):(b))

In file included from C:\Users\MiMi\Documents\Arduino\libraries\grbl/grbl.h:43:0,

from C:\Users\MiMi\Documents\Arduino\libraries\grbl\examples\grblUpload\grblUpload.ino:27:

C:\Users\MiMi\Documents\Arduino\libraries\grbl/nuts_bolts.h:52:0: warning: “min” redefined

#define min(a,b) (((a) < (b)) ? (a) : (b))

In file included from sketch\grblUpload.ino.cpp:1:0:

C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino/Arduino.h:92:0: note: this is the location of the previous definition

#define min(a,b) ((a)<(b)?(a):(b))

In file included from C:\Users\MiMi\Documents\Arduino\libraries\grbl/grbl.h:43:0,

from C:\Users\MiMi\Documents\Arduino\libraries\grbl\examples\grblUpload\grblUpload.ino:27:

C:\Users\MiMi\Documents\Arduino\libraries\grbl/nuts_bolts.h:55:0: warning: “bit” redefined

#define bit(n) (1 << n)

In file included from sketch\grblUpload.ino.cpp:1:0:

C:\Program Files (x86)\Arduino\hardware\arduino\avr\cores\arduino/Arduino.h:124:0: note: this is the location of the previous definition

#define bit(b) (1UL << (b))

Le croquis utilise 29594 octets (91%) de l’espace de stockage de programmes. Le maximum est de 32256 octets.
Les variables globales utilisent 1484 octets (72%) de mémoire dynamique, ce qui laisse 564 octets pour les variables locales. Le maximum est de 2048 octets.
Une erreur est survenue lors du transfert du croquis
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0xef
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0xef
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0xef
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0xef
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0xef
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0xef
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0xef
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0xef
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0xef
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0xef

Ce rapport pourrait être plus détaillé avec
l’option “Afficher les résultats détaillés de la compilation”
activée dans Fichier → Préférences.

Un tuto ici : https://forum.arduino.cc/index.php?topic=574627.0