FTP Backup error

I'm trying to get an automatic FTP remote Cpanel backup through an API I got directly from Cpanel official site. It starts but then log shows an error:

Net::FTP>>> Net::FTP(2.77)
Net::FTP>>> Exporter(5.63)
Net::FTP>>> Net::Cmd(2.29)
Net::FTP>>> IO::Socket::INET(1.31)
Net::FTP>>> IO::Socket(1.31)
Net::FTP>>> IO::Handle(1.28)
Net::FTP=GLOB(0x2605d10)<<< 220-FileZilla Server version 0.9.41 beta
Net::FTP=GLOB(0x2605d10)<<< 220-written by Tim Kosse ([email protected])
Net::FTP=GLOB(0x2605d10)<<< 220 Please visit http://sourceforge.net/projects/filezilla/
Net::FTP=GLOB(0x2605d10)>>> USER oldlegobackup
Net::FTP=GLOB(0x2605d10)<<< 331 Password required for oldlegobackup
Net::FTP=GLOB(0x2605d10)>>> PASS ....
Net::FTP=GLOB(0x2605d10)<<< 230 Logged on
Net::FTP=GLOB(0x2605d10)>>> TYPE I
Net::FTP=GLOB(0x2605d10)<<< 200 Type set to I
Net::FTP=GLOB(0x2605d10)>>> CWD /
Net::FTP=GLOB(0x2605d10)<<< 250 CWD successful. "/" is current directory.
Net::FTP=GLOB(0x2605d10)>>> ALLO 129453378
Net::FTP=GLOB(0x2605d10)<<< 202 No storage allocation neccessary.
Net::FTP=GLOB(0x2605d10)>>> PASV
Net::FTP=GLOB(0x2605d10)<<< 227 Entering Passive Mode (178,23,202,171,203,25)
Net::FTP=GLOB(0x2605d10)>>> STOR backup-4.7.2013_14-48-23_oldleg5.tar.gz
Can't use an undefined value as a symbol reference at /usr/lib64/perl5/Net/FTP/dataconn.pm line 54.

My bad?