use strict;
use Spreadsheet::ParseExcel;

my $parser   = Spreadsheet::ParseExcel->new();
my $workbook = $parser->parse('perl.xls');

die $parser->error(), ".\n" if ( !defined $workbook );

for my $worksheet ( $workbook->worksheets() ) 
{

my ( $row_min, $row_max ) = $worksheet->row_range();
my ( $col_min, $col_max ) = $worksheet->col_range();

for my $row ( $row_min .. $row_max ) 
    {
for my $col ( $col_min .. $col_max ) 
         {

my $cell = $worksheet->get_cell( $row, $col );
next unless $cell;

print ("Row, Col = ($row, $col)\n");
print ("Value  = ", $cell->value(),"\n");
         }
    }
}
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initially when I dint had Spreadsheet::ParseExcel module it showed an error Spreadsheet::ParseExcel.pm not found in @INC but now when I installed that module and trying to run this script(above one) it is showing this error "can't locate crypt/RC4.pm in @inc" can you tell me some solution and also why it is showing this type of error?