perl to convert excel to csv

Hi - I got the below two types of code on quick google search and they seems to solve my problem but each has one issue.

code 1:

#!/usr/bin/perl

use 5.010;
use strict;
use warnings;

use Spreadsheet::ParseExcel;
my $xlsparser = Spreadsheet::ParseExcel->new();
my $xlsbook = $xlsparser->parse('C:\\temp\\testfile.xlsx');
my $xls = $xlsbook->worksheet(0);
my ( $row_first, $row_last ) = $xls->row_range();
my ( $col_first, $col_last ) = $xls->col_range();
my $csv = '/home/Admin/Downloads/ram.csv';
for my $row ( $row_first .. $row_last ) {        # Step through each row
    for my $col ( $col_first .. $col_last ) {    # Step through each column
        my $cell = $xls->get_cell( $row, $col ); # Get the current cell
        next unless $cell;
        $csv .= $cell->unformatted(); # Get the cell's raw data -- no border 
                                      # colors or anything like that
        if ($col == $col_last) {
            $csv .= "\n"; 
        } else {
            $csv .= ","; 
        }
    }
}
open(my $FH ,'>',"$csv") or die "oops!";

while (my $line = <$FH>){
    print $FH $line;
}

Select allOpen in new window

on execution I got the error:
Can't call method "worksheet" on an undefined value at convertexceltocsv.pl line 10

code 2:

#!/usr/bin/perl

use 5.010;
use strict;
use warnings;
use Spreadsheet::XLSX;
 
my $excel = Spreadsheet::XLSX -> new ('C:\\temp\\testfile.xlsx');
my $line;
foreach my $sheet (@{$excel -> {Worksheet}}) {
    printf("Sheet: %s\n", $sheet->{Name});
    $sheet -> {MaxRow} ||= $sheet -> {MinRow};
    foreach my $row ($sheet -> {MinRow} .. $sheet -> {MaxRow}) {
        $sheet -> {MaxCol} ||= $sheet -> {MinCol};
        foreach my $col ($sheet -> {MinCol} ..  $sheet -> {MaxCol}) {
            my $cell = $sheet -> {Cells} [$row] [$col];
            if ($cell) {
                $line .= "\"".$cell -> {Val}."\",";
            }
        }
        chomp($line);
        print "$line\n";
        $line = '';
    }
}

Select allOpen in new window

Error:
Can't locate Spreadsheet/XLSX.pm in @INC (@INC contains: C:/Dwimperl/perl/site/l
ib C:/Dwimperl/perl/vendor/lib C:/Dwimperl/perl/lib .) at convertexceltocsv1.pl line
6.
BEGIN failed--compilation aborted at convertXL2Csv.pl line 6.

so I installed
install Spreadsheet::WriteExcel
but the error did not go away.

so is there any way I can convert excel to csv ?
I have one sheet excel not multi sheet.

Thanks,