my $url = ' http://www.perlmonks.com/foo?bar=baz';

print "Downloading >$url<\n"; # note use of delimiters to make a stray 
                              # leading space more visible in your debug

my $ff = File::Fetch->new(uri => $url);
say "scheme:      " . $ff->scheme;
say "host:        " . $ff->host;
say "path:        " . $ff->path;
say "file:        " . $ff->file;
say "output_file: " . $ff->output_file;

##</code><code>##

## outputs:

Use of uninitialized value in concatenation (.) or string at ./foo.pl line 10.
scheme:                              # <- error
host:         http:                  # <- error
path:        //www.perlmonks.com/    # <- error
file:        foo?bar=baz
output_file: foo

##</code><code>##

#!/usr/bin/env perl -w
use strict;

my $url = 'http://www.ekey.net/downloads-475?download=2132cbe2-2fb1-eeff-583c-50a39b6aba6c&name=v2_ITA_12-Seiter_Programm_1207_web.pdf';

(my $output_name = $url) =~ s/^.*name=(.*)$/$1/;
print "$output_name\n";

__END__

##</code><code>##

## outputs:
v2_ITA_12-Seiter_Programm_1207_web.pdf

##</code><code>##