: str_replace(): Passing null to parameter #2 ($replace) of type array|string is deprecated in
namespace Nextend\Framework\Form\Fieldset;
use Nextend\Framework\Form\AbstractFieldset;
use Nextend\Framework\Sanitize;
class FieldsetHidden extends AbstractFieldset {
public function __construct($insertAt) {
parent::__construct($insertAt, '');
public function renderContainer() {
echo '<div class="n2_form_element--hidden">';
echo wp_kses($this->decorateElement($element), Sanitize::$adminFormTags);
$element = $element->getNext();