help update files using FTP

Hello ,
I have 2 mikrotik devices
one is client , and the other is server.
I want to download all the files from the server to the client
I did this in the client

/tool fetch mode=ftp address=10.10.10.10 user=ftp password=ftp123 src-path=myfiles dst-path=myfiles

but I get error

status: failed
failure: Connection reset by peer

why ?
what is wrong?

Thanks,