Ticket #21931: 21931.3.diff

src/wp-includes/default-constants.php

@@ -299 +299 @@
  * @since 3.0.0
  */
 function wp_templating_constants() {
+
+        $theme = wp_get_theme(); 
+        if ( $theme->errors() ) {
+                wp_die( $theme->errors()->get_error_message() ); 
+        }
+
         /**
          * Filesystem path to the current active template directory
          * @since 1.5.0