I can not do a backup from the ftp server. The files are queued and shows the following connection error.
Error GnuTLS-110 en gnutsl_record_recv: The TSL connection was non-properly terminated.
Could not read from transfer socket: ECONNABORTED - Conexion abortada.
That connection error looks like a fairly normal timeout error. It’s common to see those messages without having any trouble transferring the files.
However, please make sure you login to the FTP server and then immediately start the transfer. It’s possible the transfer isn’t started properly if the main connection is already kicked out because of the timeout.