Znote php error

[warsar]

Hi a xampp notice window comes up everytime I try to post news. It says as follows: Notice: Undefined index: date in F:\xampp\htdocs\layout\sub\index.php on line 36

<?php require_once 'engine/init.php'; include 'layout/overall/header.php';
    if ($config['allowSubPages'] && file_exists("layout/sub/index.php")) include 'layout/sub/index.php';
    else {
        $cache = new Cache('engine/cache/news');
        if ($cache->hasExpired()) {
            $news = fetchAllNews();
           
            $cache->setContent($news);
            $cache->save();
        } else {
            $news = $cache->load();
        }
       
        // Design and present the list
        if ($news) {
            function TransformToBBCode($string) {
                $tags = array(
                    '[center]{$1}[/center]' => '<center>$1</center>',
                    '[b]{$1}[/b]' => '<b>$1</b>',
                    '[size={$1}]{$2}[/size]' => '<font size="$1">$2</font>',
                    '[img]{$1}[/img]'    => '<a href="$1" target="_BLANK"><img src="$1" alt="image" style="width: 100%"></a>',
                    '[link]{$1}[/link]'    => '<a href="$1">$1</a>',
                    '[link={$1}]{$2}[/link]'  => '<a href="$1" target="_BLANK">$2</a>',
                    '[color={$1}]{$2}[/color]' => '<font color="$1">$2</font>',
                    '[*]{$1}[/*]' => '<li>$1</li>',
                );
                foreach ($tags as $tag => $value) {
                    $code = preg_replace('/placeholder([0-9]+)/', '(.*?)', preg_quote(preg_replace('/\{\$([0-9]+)\}/', 'placeholder$1', $tag), '/'));
                    $string = preg_replace('/'.$code.'/i', $value, $string);
                }
                return $string;
            }
            foreach ($news as $n) {
                ?>
                <table id="news">
                    <tr class="yellow">
                        <td class="zheadline"><?php echo getClock($n['date'], true) .' by <a href="characterprofile.php?name='. $n['name'] .'">'. $n['name'] .'</a> - <b>'. TransformToBBCode($n['title']) .'</b>'; ?></td>
                    </tr>
                    <tr>
                        <td>
                            <p><?php echo TransformToBBCode(nl2br($n['text'])); ?></p>
                        </td>
                    </tr>
                </table>
                <?php
            }
        } else {
            echo '<p>No news exist.</p>';
        }
    }
include 'layout/overall/footer.php'; ?>

This is index.php, I looked at line 36 and can't really understand whats happening.
Help would be appreciated !