Undefined array key 1

[cimt]

PHP 8.0.16 Clean EVO 3.1.9 install

Error : Undefined array key 1

Error information ErrorType[num] WARNING[2] File D:\laragon\www\evo3\assets\plugins\pagebuilder\pagebuilder.php Line 744 Source list($val, $key) = is_array($element) ? $element : explode('==', $element);