Hello, I get the following error when I execute the below script "Can't call method "mail" on an undefined value at ./recalert.plx line 24, <RECCHK> line 9." I did not write the original perl script, I just modified the email addresses to work in my environment, and the email addresses in the below script are sanitized. The script has worked for about three years without issue, I really have no perl experience, and not sure what the error means, or how to fix it/ Please help

#!/usr/bin/perl -w

$from    = 'email@123.org';
$to      = 'email@456.org';
$servername = 'email.789.org';
# $user   ='username';
# $pwd    ='password';

open RECCHK, "/tmp/statusmon.eml";
@recchkvar = <RECCHK>;

use Sys::Hostname;
my $host = hostname();
my $host1 = uc($host);
open STDERR, '>&STDOUT'; #redirect STDERR output to STDOUT
use Net::SMTP;
$smtp = Net::SMTP->new("$servername", Debug   => 1);

### Enable below if authentication required and set parameters above
# $smtp->datasend("AUTH LOGIN\n");
# $smtp->datasend("$user\n");
# $smtp->datasend("$pwd\n");
sleep(2);
$smtp->mail("$from");
$smtp->to("$to");
$smtp->data;
$smtp->datasend("Subject: 79XX/69XXC/WB3 InfiniStream $host1 has an is
+sue, and requires investigation \n");

foreach $line (@recchkvar)
{
$smtp->datasend("$line\n");
}

close RECCHK;
$smtp->dataend;
$smtp->quit
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