テンプレートエラー
<pre>
object(WP_Post)#1650 (24) {
  ["ID"]=>
  int(601)
  ["post_author"]=>
  string(1) "4"
  ["post_date"]=>
  string(19) "2022-12-14 14:14:05"
  ["post_date_gmt"]=>
  string(19) "2022-12-14 05:14:05"
  ["post_content"]=>
  string(0) ""
  ["post_title"]=>
  string(21) "サムネイル画像"
  ["post_excerpt"]=>
  string(0) ""
  ["post_status"]=>
  string(7) "inherit"
  ["comment_status"]=>
  string(4) "open"
  ["ping_status"]=>
  string(6) "closed"
  ["post_password"]=>
  string(0) ""
  ["post_name"]=>
  string(63) "%e3%82%b5%e3%83%a0%e3%83%8d%e3%82%a4%e3%83%ab%e7%94%bb%e5%83%8f"
  ["to_ping"]=>
  string(0) ""
  ["pinged"]=>
  string(0) ""
  ["post_modified"]=>
  string(19) "2022-12-14 14:14:56"
  ["post_modified_gmt"]=>
  string(19) "2022-12-14 05:14:56"
  ["post_content_filtered"]=>
  string(0) ""
  ["post_parent"]=>
  int(599)
  ["guid"]=>
  string(88) "https://www.kokuwa.co.jp/wp-content/uploads/2022/12/7d84811d374bf32f132f4ae3c2e1c3c8.jpg"
  ["menu_order"]=>
  int(0)
  ["post_type"]=>
  string(10) "attachment"
  ["post_mime_type"]=>
  string(10) "image/jpeg"
  ["comment_count"]=>
  string(1) "0"
  ["filter"]=>
  string(3) "raw"
}
</pre>