Do you have the debug attribute of Net::FTP on? 
my $ftp = Net::FTP->new("some.host.name", Debug => 1);

[download]
Or are you asking where does the STDERR stuff go? If the latter, you'll need to find your web server's error_log, which will depend entirely on your (or your ISP's) setup.

In reply to Re: Where can I see the Debug info from Net::FTP by davidrw
in thread Where can I see the Debug info from Net::FTP by boboson

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