Ошибка файла intro_image.php

<?php
/**
 * @package     Joomla.Site
 * @subpackage  Layout
 *
 * @copyright   Copyright (C) 2005 - 2016 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */
 
defined('JPATH_BASE') or die;
$params  = $displayData->params;
 
$images = json_decode($displayData->images);
 
// srcset for retina images
$intro_img_file = htmlspecialchars($images->image_intro);
$image_extensions = [".jpg", ".png", ".gif", ".jpeg"];
foreach ($image_extensions as $image_extension) {
    $pos = strpos($intro_img_file, $image_extension);
    if($pos !== false) {
        $intro_img_file_without_extension = explode($image_extension, $intro_img_file);
        $intro_img_file_extension = $image_extension;
        break;
    }
}
 
// check if retina image exists
$retina_image = false;
if (file_exists(JPATH_BASE.DIRECTORY_SEPARATOR.$intro_img_file_without_extension[0]."-2x".$intro_img_file_extension)) {
    $retina_image = true;
}
if (isset($images->image_intro) && !empty($images->image_intro)) :
    $imgfloat = (empty($images->float_intro)) ? $params->get('float_intro') : $images->float_intro;
    $image_size = getimagesize(htmlspecialchars($images->image_intro));
    ?>
    <div class="pull-<?php echo htmlspecialchars($imgfloat); ?> item-image"> 
    <?php if ($params->get('link_titles') && $params->get('access-view')) : ?>
        <a href="<?php echo JRoute::_(ContentHelperRoute::getArticleRoute($displayData->slug, $displayData->catid, $displayData->language)); ?>">
            <img
                <?php if ($images->image_intro_caption) {
                    echo 'class="caption img-with-animation"' . ' title="' . htmlspecialchars($images->image_intro_caption) . '"';
                } else {
                    echo 'class="img-with-animation" ';
                } ?>
                data-delay="200" data-animation="fade-in-from-right"
                src="<?php echo htmlspecialchars($images->image_intro); ?>"
                width="<?php echo $image_size[0]; ?>"
                height="<?php echo $image_size[1]; ?>"
                <?php if($retina_image === true) { ?>
                srcset="<?php echo JURI::base(true).DIRECTORY_SEPARATOR.$intro_img_file_without_extension[0]."-2x".$intro_img_file_extension; ?> 2x"
                <?php } ?>
                alt="<?php echo htmlspecialchars($images->image_intro_alt); ?>"
                itemprop="thumbnailUrl"
            />
        </a>
    <?php else : ?>
        <img
            <?php if ($images->image_intro_caption):
                echo 'class="caption"' . ' title="' . htmlspecialchars($images->image_intro_caption) . '"';
            endif; ?>
            src="<?php echo htmlspecialchars($images->image_intro); ?>"
            <?php if($retina_image === true) { ?>
            srcset="<?php echo JURI::base(true).DIRECTORY_SEPARATOR.$intro_img_file_without_extension[0]."-@2x".$intro_img_file_extension; ?> 2x" alt="<?php echo htmlspecialchars($images->image_intro_alt); ?>"
            <?php } ?>
            alt="<?php echo htmlspecialchars($images->image_intro_alt); ?>"
            itemprop="thumbnailUrl"
        />
    <?php endif; ?>
</div>
<?php endif; ?>

$image_extensions = [".jpg", ".png", ".gif", ".jpeg"];

$image_extensions = array(".jpg", ".png", ".gif", ".jpeg");