Баг в ajax умном поиске - Баги Joomla

// Determine the relevant mapping table suffix by inverting the logic from drivers
$mappingTableSuffix = substr(md5(substr($this->getState('input'), 0, 1)), 0, 1);
...

// Join mapping table for term <-> link relation
$mappingTable = $db->quoteName('#__finder_links_terms' . $mappingTableSuffix);

SELECT DISTINCT(t.term)
FROM j_finder_terms AS t
INNER JOIN j_finder_links_terms8 AS tm ON tm.term_id = t.term_id
INNER JOIN j_finder_links AS l ON (tm.link_id = l.link_id)
WHERE t.term_id IN (7765,8329,8331,8328,8576,8324,8320,8330,8327,8326,8319,8322,8575,8323,8321,8325)
AND l.access IN (1,1,2,3,6)
AND l.state = 1
AND l.published = 1
ORDER BY t.links DESC, t.weight DESC

$mappingTableSuffix = substr(md5(substr($this->getState('input'), 0, 1)), 0, 1);

// подключаем в начале файла класс сразу после defined('_JEXEC') or die;
use Joomla\String\StringHelper;

//заменяем багованый файл на исправный
//$mappingTableSuffix = substr(md5(substr($this->getState('input'), 0, 1)), 0, 1);
$mappingTableSuffix = StringHelper::substr(md5(StringHelper::substr($this->getState('input'), 0, 1)), 0, 1);