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vsftpd log does not support utf8 filenames

I have vsftpd server for sharing my files.

Most of my files have greek filename.

File /var/log/vsftpd.log contains uploaded/downloaded file entries.

This is what I get (because of greek filenames):

Fri Dec  9 01:39:39 2022 [pid 16628] [engineer] OK DOWNLOAD: Client "85.75.55.151", "/??????/????/7?? ??????????????/?????????????????????? ??????????????????????????/????????????????/?????????????? ?????????????????????? ??????????????/???????????????????? ?????????????????????? ???????? ???????????????????? ????????????.docx", 13325 bytes, 34.87Kbyte/sec
Fri Dec  9 01:39:39 2022 [pid 16628] [engineer] OK DOWNLOAD: Client "85.75.55.151", "/??????/????/7?? ??????????????/?????????????????????? ??????????????????????????/????????????????/?????????????? ?????????????????????? ??????????????/???????????????????? ?????????????????????? ???????? ???????????????????? ????????????.pdf", 175575 bytes, 489.28Kbyte/sec
Fri Dec  9 01:39:40 2022 [pid 16628] [engineer] OK DOWNLOAD: Client "85.75.55.151", "/??????/????/7?? ??????????????/?????????????????????? ??????????????????????????/????????????????/?????????????? ?????????????????????? ??????????????/???????????????????? ?????????????????????? ???????? ???????????????????? ????????????.xlsx", 21807 bytes, 276.84Kbyte/sec
Fri Dec  9 01:39:40 2022 [pid 16628] [engineer] OK DOWNLOAD: Client "85.75.55.151", "/??????/????/7?? ??????????????/?????????????????????? ??????????????????????????/????????????????/?????????????????? ????????????????/?????????????????? ????????????????.xlsx", 10374 bytes, 280.84Kbyte/sec

Ok. This is not good, if I want a log supervision.

Can I do something to get a utf8 log?