I have a script that uses Text::CSV to build a HoH structure from a CSV file. The script stopped at the last line of the following code: 
# snippet of the code
sub buttons
{
my $csv_file = '/home/user/mydomain.com/cgi-bin/files/spreadsheet.csv'
+;

my $csv = Text::CSV->new ( { allow_whitespace => 1, binary => 1, sep_c
+har => '|' } )
    or die "Cannot use CSV: ".Text::CSV->error_diag ();
my $csv_fh;
open ($csv_fh, "<:encoding(utf8)", $csv_file) or die "$csv_file : $!";

$csv->column_names($csv->getline($csv_fh));

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Here's the error that I found in the error logs: 
 [error] [client 66.200.100.66] sv_upgrade from type 8 down to type 6 
+at myscript.pl line 672, <$csv_fh> line 1.

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Line 672 is the column_names line above. Perl version 5.10.0 I recently appended a couple lines to the spreadsheet.csv file. I took a look at the docs, but I'm in over my head here. Any hints appreciated. The rest of the sub follows 
my @buttons;
while (my $row = $csv->getline_hr($csv_fh))
    {
    push(@buttons, $row) unless ($. == 1);
    }
    
my %buttons_hash = "";
for my $button (@buttons)
    {
    my $this_item_name = ${$button}{item_name};
    ${buttons_hash}{$this_item_name} = $button;
    }
return \%buttons_hash;
}

[download]

In reply to sv_upgrade error by wrinkles

Title:
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