Bom dia VL, 
Estou montando um servidor com Linuc CentOS na versão 6.7.
Nele instalei um CUPS + Webmin + Samba + MySQL + Apache + PHP + JASmine.
Tudo está instalado e configurado certinho, mas na última parte, o JASmine ao entrar na tela dele apresenta a mensagem de erro a seguir:
Users Top10
An error occured, please check the error messages.
“?>
Printers Top5
An error occured, please check the error messages.
“?>
Servers Top5
An error occured, please check the error messages.
“?>
Fui até os logins do Apache e verifiquei o seguinte erro:
cat /var/log/httpd/error_log
[Thu Oct 01 09:14:56 2015] [warn] ./mod_dnssd.c: No services found to register
[Thu Oct 01 09:39:00 2015] [error] [client 192.168.0.232] PHP Notice:  Undefined index: iSearchString in /var/www/html/find.php on line 90, referer: 
http://192.168.0.220/index.php?section=summary
[Thu Oct 01 09:39:02 2015] [error] [client 192.168.0.232] PHP Notice:  Undefined index: iSearchString in /var/www/html/find.php on line 90, referer: 
http://192.168.0.220/index.php?section=find&searchType=printer
[Thu Oct 01 09:39:03 2015] [error] [client 192.168.0.232] PHP Notice:  Undefined index: iSearchString in /var/www/html/find.php on line 90, referer: 
http://192.168.0.220/index.php?section=find&searchType=user
Executei o comando:
cat /var/www/html/find.php
obtive a seguinte resposta:
<?php
/* JASmine, print accounting system for Cups.
 Copyright (C) Nayco.
 (Please read the COPYING file)
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
 as published by the Free Software Foundation; either version 2
 of the License, or (at your option) any later version.
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA. */
  /* Find.php: Provides a search page to find printers and users */
  /* Includes */
  include_once("libJasReports.php");
  /* Displays the search form */
  function display_search_form ($objectType, $searchString=""){
    $me=htmlentities($_SERVER["PHP_SELF"]);
    $searchString=htmlentities($searchString);
    $objectType=(!empty($objectType))?htmlentities($objectType):"";
    $check_user=($objectType=="" || $objectType=="user")?"checked ":"";
    $check_printer=($objectType=="printer")?"checked ":"";
    $check_server=($objectType=="server")?"checked ":"";
    echo "<!-- Begin search form -->\n";
    echo "<div id=\"search_form\">\n";
    echo "  <form name=\"search_form\" action=\"$me?section=find\" method=\"post\">\n";
    echo "    <label>\n";
    echo "      <input type=\"text\" name=\"iSearchString\" value=\"$searchString\" />\n";
    echo "      Text to search\n";
    echo "    </label>\n";
    echo "    <fieldset>\n";
    echo "      <legend>Object type</legend>\n";
    echo "      <label>\n";
    echo "        <input type=\"radio\" name=\"iSearchType\" value=\"user\" $check_user/>\n";
    echo "      Users</label>\n";
    echo "      <label>\n";
    echo "        <input type=\"radio\" name=\"iSearchType\" value=\"printer\" $check_printer/>\n";
    echo "      Printer</label>\n";
    echo "      <label>\n";
    echo "        <input type=\"radio\" name=\"iSearchType\" value=\"server\" $check_server/>\n";
    echo "      Servers</label>\n";
    echo "    </fieldset>\n";
    echo "    <input type=\"submit\" value=\"submit\" \>\n";
    echo "    <input type=\"reset\" value=\"clear\" />\n";
    echo "  </form>\n";
    echo "</div> \n";
    echo "<!-- End search form -->\n";
  }
  /* Function to fetch the results, and display them
     TODO: WRITE A BETTER DESCRIPTION !!! */
  function display_results($searchString, $objectType){
    echo "<!-- Begin search results -->\n";
    if(!$result=jas_searchObject($searchString, $objectType)){
      echo "<p><em>Query failed.</em></p>\n";
      return false;
    }
    else{
      if ($result>0){
        echo "<p>\n";
        echo "  <em>The following results were returned:</em>\n";
        echo "  <ul>\n";
        foreach ($result as $line){
          $lineDisplay=htmlentities($line);
          echo "    <li><a href=\"?section=show_$objectType&$objectType=$line\">$lineDisplay</a></li>\n";
        }
        echo "  </ul>\n";
        echo "</p>\n";
      }
      else{
        echo "  <em>No result.</em>\n";
      }
    }
    echo "<!-- End search results -->\n";
  }
  // Begin to process the page...
  $iSearchString=$_POST['iSearchString'];	(Essa é a linha 90 que o Apache acusa o ERRO)
  if(empty($_POST['iSearchType'])){
    if(empty($_GET['searchType']))
      $iObjectType="user";
    else
      $iObjectType=$_GET['searchType'];
   }
  else
    $iObjectType=$_POST['iSearchType'];
?>
    <h2>Search for objects</h2>
<?php
  /*echo "\$_POST['iSearchString']=".$_POST['iSearchString']."\n<br />";
  echo "\$_POST['iSearchType']=".$_POST['iSearchType']."\n<br />";
  echo "\$_GET['searchType']=".$_GET['searchType']."\n<br />";
  echo "\$iSearchString=$iSearchString\n<br />";
  echo "\$iObjectType=$iObjectType\n<br />"; */
?>
    <h3>Help</h3>
    <p>Some help...</p>
<?php
  display_search_form($iObjectType, $iSearchString);
  if (!empty($_POST['iSearchString'])){
    echo "    <h3>Results</h3>\n";
    DB_connect($DB_host,$DB_login,$DB_pass);
    DB_select($DB_db);
    display_results($iSearchString, $iObjectType);
  }
?>
Não faço ideia do que seja, será que alguém pode me ajudar???