usb key and hd folder

[Vincent_Mathoscope]

hi
i try to make a syncrhonisation (in both senses) between an usb key and a folder of my hd
response :

Impossible d'ouvrir le répertoire "/Volumes/BLEUE_8Go/.DocumentRevisions-V100".
Code Erreur 13: Permission denied [opendir]

have i done something wrong ?

[Vincent_Mathoscope]

I jsut moved to 10.17 and the problems remains. I run mac os X mojave

[Vincent_Mathoscope]

sorry for the artistic flou, in fact it seems that after the update, it works
indeed, the above message still appears, but the synchronisation is, thought, efficient