New to perl modules, I have the issue where, my perl script calls in a perl module. I get one of three responses when I load that script: 1. error 500 page 2. error Undefined subroutine called 3. the correct output, though lately that isn't happening at all :( The resultant pages seem to rotate between the three (above) and my ISP assured my last week, they had disabled caching, which at that time was identified as the cause. What else could be stopping this module from working? here's the calling script: login.pl 
#!/usr/bin/perl -w

  use strict;
  use warnings;
  use CGI;
  use Data::Dumper;
  my $cgi = new CGI;
  
  
  BEGIN{
      unshift @INC, "/var/www/vhosts/myDomain.com/secured.myDomain.com
+/cgi-bin/library";
  }
  
  
print $cgi->header;


use doctypeAndHeader;

header();

[download]
And, here's the module called doctypeAndHeader.pm 

package doctypeAndHeader;

  use strict;
  use warnings;

  use Exporter;

  use vars qw(@ISA @EXPORT);
 
  @ISA = qw(Exporter);

  @EXPORT = ("header");
  
sub header{

  my $doctypeAndHeader = '';
  $doctypeAndHeader = getDoctypeAndHeader();
  print qq($doctypeAndHeader);
}




sub getDoctypeAndHeader{
  
  
  # configs
  my $pageTitle = 'Bangor Town Centre';
  #my $scriptUrl = $ENV{"SCRIPT_NAME"};
  #my @scriptNameArray = split( '/' , $script_url);
  #my $scriptName = $scriptNameArray[-1]; 
   
  
  my $doctypeAndHeader = "<!doctype html>
  <html>
    <head>
      <title>$pageTitle</title>
    </head>
    <body></body>
  </html>";
      
return $doctypeAndHeader;
}
1;

[download]

In reply to Why server error out with module by keen2learn

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