$tree error on frontpage

Using Concrete / Help
1

Hi,
I was editing my sons pages yesterday ( optag.nu ) and I changed a tree nav.
Now the pages get this error, and I have no idea what to do (?!?!?) :

Whoops \ Exception \ ErrorException (E_WARNING)
Undefined variable $tree

/customers/9/1/2/optag.nu/httpd.www/packages/modena/blocks/topic_list/templates/modena_filters/view.php

<?php  defined('C5_EXECUTE') or die("Access Denied.");
if (!isset($selectedTopicID)) {
    $selectedTopicID = null;
}
use Concrete\Core\Tree\Node\Node as TreeNode;
use Concrete\Core\Tree;
$pk = Package::getByHandle('modena');
?>
 
<div class="ccm-block-topic-list-flat-filter margin-bottom-20">
<?php if($tree) : ?>
<?php
    if (is_object($tree)) {
        $node = $tree->getRootTreeNodeObject();
        if (is_object($node)) {
            $node->populateDirectChildrenOnly(); ?>
 
                <div class="isotope-filters-buttons <?php echo $pk->getConfig()->get('vidal.ensemble.topic_list_position','text-center'); ?>">
                    <div class="isotope-filters-button
                    <?php if (!$selectedTopicID) { ?> isotope-filters-button__selected"<?php } ?>><?php echo t('All')?></div><span class="isotope-filters-divider">/</span>
 
                <?php foreach ($node->getChildNodes() as $child) { ?>
 
                <?php
                    $topics = $child->getTreeNodeDisplayName();
                    $tax_links = str_replace(' ', '-', $topics );
                    $tax = strtolower($tax_links);
                ?>
 
                <div class="isotope-filters-button" data-filter=".<?php echo $tax;  ?>"
                    <?php if (isset($selectedTopicID) && $selectedTopicID == $child->getTreeNodeID()) { ?>
                        class="isotope-filters-button__selected"
                    <?php } ?> ><?php echo $child->getTreeNodeDisplayName()?></div><span class="isotope-filters-divider">/</span>
                <?php } ?>
            </div>
        <?php } ?>
    </div>
<?php } ?>
                    <?php endif; ?>

Arguments

  1. “Undefined variable $tree”

Concrete CMS

Version “9.3.7”
Installed Version “9.3.7”
Database Version “20240910000000”

PHP

Version “8.2.27”
Extensions array:52
2

I believe if you change this line

to

that should fix it. Tree is not always defined it would seem, so you’re referencing an undefined variable.

3

You may need to update Modena.