我有以下代码：

<?php
  function ex_rewrite_rules(){
     //discography query variable rewrite
   add_rewrite_rule( \'artists/([^/]+)/discography/?$\', \'index.php?album_artist=$matches[1]&discography=yes\', \'top\');
//albums rewrite rule 
add_rewrite_rule( \'artists/([^/]+)/discography/([^/]+)/?$\', \'index.php?album_artist=$matches[1]&discography=yes&albums=$matches[2]\', \'top\' );
//songs rewrite rule
add_rewrite_rule( \'artists/([^/]+)/discography/([^/]+)/([^/]+)/?$\', \'index.php?album_artist=$matches[1]&discography=yes&albums=$matches[2]&songs=$matches[3]\', \'top\' );
 }
add_action(\'init\',\'ex_rewrite_rules\');
//Function to register query vars
function ex_prefix_artists_query_var($vars){
  $vars[]  = \'discography\';
  $vars[]  = \'album_artist\';
  return $vars;
}

add_filter(\'query_vars\',\'ex_prefix_artists_query_var\');

//function to load template when discography variable is called
add_filter( \'template_include\', function( $path ) {
if( get_query_var( \'discography\' ) && is_singular(\'artists\') ) {
    return get_template_directory() . \'/single-artists-discography.php\';
}

return $path;
});
?>

URL重写工作正常，但discography除外，它应该加载模板的单艺术家discography。调用discography变量时使用php。相反，它将返回索引。php。换句话说，url示例。com/artists/aliciakeys/discography应该加载模板，而不是返回到站点的索引。php

我做错了什么？我怀疑这是url重写规则。

为了获得更多信息，我附上了重写分析器的屏幕截图，显示它正在正确构建

add_rewrite_rule( \'artists/([^/]+)/discography/?$\', \'index.php?album_artist=$matches[1]&discography=yes\', \'top\');

add_rewrite_rule( \'artists/([^/]+)/discography/?$\', \'index.php?artists=$matches[1]&discography=yes\', \'top\');