Thank you. My error comes from the lack of fully written sample: 
my $filename = "$upload_dir/$filename";

-d $upload_dir or die "$upload_dir: $!";
-f $filename   or die "$filename: $!";

# I'm not in the secret why those endless absolute
# filepaths are scattered almost always

[download]


In reply to Re^3: use of uninitialised value by sh1tn
in thread use of uninitialised value by Anonymous Monk

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