Array
object(WP_Error)#14804 (3) {
 ["errors"]=>
 array(1) {
 ["invalid_taxonomy"]=>
 array(1) {
 [0]=>
 string(36) "不正なタクソノミーです。"
 }
 }
 ["error_data"]=>
 array(0) {
 }
 ["additional_data":protected]=>
 array(0) {
 }
}
Array
object(WP_Error)#14829 (3) {
 ["errors"]=>
 array(1) {
 ["invalid_term"]=>
 array(1) {
 [0]=>
 string(18) "空のターム。"
 }
 }
 ["error_data"]=>
 array(0) {
 }
 ["additional_data":protected]=>
 array(0) {
 }
}