Fatal error: Uncaught Error: Object of class WP_Error could not be converted to string
in /home/virtwww/w_oam-spb-ru_9c5f73c1/http/wp-content/themes/oam-spb/allprojects.php on line 31

Стек вызовов:

1. include()
   wp-includes/template-loader.php:106
2. require_once()
   wp-blog-header.php:19
3. require()
   index.php:17