Nextcloud: 'will not be accessible due to incompatible encoding' (files invisible because of NFD or Latin-1 names)
convmv -f utf-8 -t utf-8 -r –notest –nfc and then occ files:scan –all. Without –notest it only simulates. For Latin-1 names, convmv -f iso-8859-1 -t utf-8. From macOS, rsync –iconv=utf-8-mac,utf-8.