Fatal error: Uncaught Error: Object of class WP_Error could not be converted to string
in /home/users/2/ship0072/web/436_ritakyouei/wp-content/themes/shipinc/archive-works.php on line 58

コールスタック:

1. include()
   wp-includes/template-loader.php:113
2. require_once()
   wp-blog-header.php:19
3. require()
   index.php:17