Upload problem

When I start uploading, after a while, I get the following error with arduino 1.8.12 :

"C:\\Program Files (x86)\\Arduino\\hardware\\tools\\avr/bin/avr-size" -A "C:\\Users\\Mario\\AppData\\Local\\Temp\\arduino_build_513148/Marlin.ino.elf"
Le croquis utilise 179618 octets (70%) de l'espace de stockage de programmes. Le maximum est de 253952 octets.
Les variables globales utilisent 5589 octets (68%) de mémoire dynamique, ce qui laisse 2603 octets pour les variables locales. Le maximum est de 8192 octets.
Une erreur est survenue lors du transfert du croquis
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_getsync(): timeout communicating with programmer

Do you have an idea of ​​the problem ?

Thanks for your help, Tchicken.