我不知道为什么get_term() 可以在其他页面上使用，但无法在中使用functions.php. 使用get_term() 在里面functions.php 导致WordPress报告错误分类无效。

我的function.php 它是ajax处理程序，已经为ajax注册

 public function load_destination()
    {
        global $wpdb;
        $termId = $_POST[\'termid\']; 
       $term =  get_term($termid,\'package_state\');
       $args = array(
\'post_type\' => \'package\',
\'tax_query\' => array(
    array(
    \'taxonomy\' => \'package_state\',
    \'field\' => \'id\',
    \'terms\' => $termId
     )
  )
);

$query = new WP_Query( $args );
$collection=[];
$count =1;
while($query->have_posts()) : $query->the_post();

$collection[\'data\'][] = // i need to set term data here $term;


$count++;
endwhile;
    wp_send_json($collection);    
    }