今天客户wordpress网站出现列表分页显示404页面的情况，列表页正常，翻页的时候出现404的错误页面。

遇到这个问题需要修改wordpress文件wp-includes\class-wp.php ，

要找到对应函数function handle_404()

public function handle_404() {
  global $wp_query;

  /**
   * Filters whether to short-circuit default header status handling.
   *
   * Returning a non-false value from the filter will short-circuit the handling
   * and return early.
   *
   * @since 4.5.0
   *
   * @param bool     $preempt  Whether to short-circuit default header status handling. Default false.
   * @param WP_Query $wp_query WordPress Query object.
   */
  if ( false !== apply_filters( 'pre_handle_404', false, $wp_query ) ) {
   return;
  }

  // If we've already issued a 404, bail.
  if ( is_404() )
   return;

  // Never 404 for the admin, robots, or if we found posts.
  if ( is_admin() || is_robots() || $wp_query->posts ) {

   $success = true;
   if ( is_singular() ) {
    $p = false;

    if ( $wp_query->post instanceof WP_Post ) {
     $p = clone $wp_query->post;
    }

    // Only set X-Pingback for single posts that allow pings.
    if ( $p && pings_open( $p ) ) {
     @header( 'X-Pingback: ' . get_bloginfo( 'pingback_url', 'display' ) );
    }

    // check for paged content that exceeds the max number of pages
    $next = '<!--nextpage-->';
    if ( $p && false !== strpos( $p->post_content, $next ) && ! empty( $this->query_vars['page'] ) ) {
     $page = trim( $this->query_vars['page'], '/' );
     $success = (int) $page <= ( substr_count( $p->post_content, $next ) + 1 );
    }
   }

   if ( $success ) {
    status_header( 200 );
    return;
   }
  }

  // We will 404 for paged queries, as no posts were found.
  if ( ! is_paged() ) {

   // Don't 404 for authors without posts as long as they matched an author on this site.
   $author = get_query_var( 'author' );
   if ( is_author() && is_numeric( $author ) && $author > 0 && is_user_member_of_blog( $author ) ) {
    status_header( 200 );
    return;
   }

   // Don't 404 for these queries if they matched an object.
   if ( ( is_tag() || is_category() || is_tax() || is_post_type_archive() ) && get_queried_object() ) {
    status_header( 200 );
    return;
   }

   // Don't 404 for these queries either.
   if ( is_home() || is_search() || is_feed() ) {
    status_header( 200 );
    return;
   }
  }

  // Guess it's time to 404.
  $wp_query->set_404();
  status_header( 404 );
  nocache_headers();
}

修改为如下代码，就可以解决这个问题。

function handle_404() {  global $wp_query;  if ( !is_admin() && ( 0 == count( $wp_query->posts ) ) && !is_404() && !is_robots() && !is_search() && !is_home() ) {  // Don’t 404 for these queries if they matched an object.  if ( ( is_tag() || is_category() || is_tax() || is_author() ) && $wp_query->get_queried_object()  ) {  if ( !is_404() )  status_header( 200 );  return;  }  $wp_query->set_404();  status_header( 404 );  nocache_headers();  } elseif ( !is_404() ) {  status_header( 200 );  }  }