Search by author doesn’t work (solution)

Line 95 change to below:
$args = array(
“post_type” => $post_type,
“posts_per_page” => isset($_GET[‘posts_per_page’]) ? (int)$_GET[‘posts_per_page’] : 200,
“post_status” => array(“publish”, “pending”, “draft”, “future”, “private”),
“order” => “ASC”,
“orderby” => “id”,
“paged” => isset($_GET[‘page_number’]) ? (int)$_GET[‘page_number’] : 1,
“author_name” => isset($_GET[‘author’]) ? $_GET[‘author’] : null,
);