Hi,
Your issue was fixed. And I directly fixed it on your site through the file:
/components/com_jak2filter/models/itemlist.php
line 1518:
$searchPattern = implode("' AND i.extra_fields REGEXP '", $options);
change into:
$searchPattern = count($value) > 1
? "'" . implode("' AND i.extra_fields REGEXP '", $options) . "'"
: implode("' AND i.extra_fields REGEXP '", $options);
line 1532:
$where[] = "(i.extra_fields REGEXP ".$db->quote($searchPattern).")";
change into:
$where[] = count($value) > 1
? "i.extra_fields REGEXP " . $searchPattern
: "(i.extra_fields REGEXP ".$db->quote($searchPattern).")";
Kindly check it on the site.
