diff --git a/layouts/partials/paige/func-resource.html b/layouts/partials/paige/func-resource.html
index 64948027..47263bd5 100644
--- a/layouts/partials/paige/func-resource.html
+++ b/layouts/partials/paige/func-resource.html
@@ -33,4 +33,8 @@
     {{ end }}
 {{ end }}
 
+{{ if not $result }}
+    {{ errorf "layouts/partials/paige/func-resource.html: cannot find resource %q" $url }}
+{{ end }}
+
 {{ return $result }}