Warning after a search

Warning: array_push() expects at least 2 parameters, 1 given in /data/vhosts/mte90.net/wpoad.mte90.net/wp-content/plugins/search-filter-posts-with-ajax/lib/Q_AJAX_Filter_Core.php on line 235

https://wordpress.org/plugins/search-filter-posts-with-ajax/

Fix line 235 with:

$args['s'] = array();
array_push($args['s'], implode(',', $ids));