Ticket #46300: 46300.1.diff

wp-includes/ms-site.php

@@ -68 +68 @@
         }
 
         $new_site = get_site( $wpdb->insert_id );
+        if ( is_null( $new_site ) ) {
+                return new WP_Error( 'get_site_error', __( 'Could not retrieve site data.' ) );
+        }
 
         clean_blog_cache( $new_site );