J’ai du faire :

# sudo -u www-data php /usr/share/nginx/nextcloud/occ maintenance:mode --off
# sudo -u www-data php /usr/share/nginx/nextcloud/occ maintenance:repair
# sudo -u www-data php /usr/share/nginx/nextcloud/occ maintenance:mimetype:update-db
# sudo -u www-data php /usr/share/nginx/nextcloud/occ db:add-missing-indices
# sudo -u www-data php /usr/share/nginx/nextcloud/occ db:convert-filecache-bigint
# sudo -u www-data php /usr/share/nginx/nextcloud/occ db:add-missing-primary-keys
# sudo systemctl restart nginx.service
# sudo systemctl restart php8.1-fpm.service

Et c’est reparti …