python: modeling: empty root "object_path" fixed

diff --git a/python/knot_resolver/utils/modeling/base_schema.py b/python/knot_resolver/utils/modeling/base_schema.py
index 73cd1d0aa6de20514da708b3cccf2658ab5a7cea..3358de9d7ce2fa2e71f77a179975f9c3d1214389 100644 (file)
--- a/python/knot_resolver/utils/modeling/base_schema.py
+++ b/python/knot_resolver/utils/modeling/base_schema.py
@@ -624,7 +624,7 @@ class ObjectMapper:
                 keys = ", ".join((f"'{u}'" for u in unused))
                 raise DataValidationError(
                     f"unexpected extra key(s) {keys}",
-                    object_path,
+                    object_path or "/",
                 )
 
         # validate the constructed value