records: updates 'get_error_path' helper

Signed-off-by: Pamfilos Fokianos <pamfilosf@gmail.com>

Author: pamfilos

cap/modules/records/errors.py

@@ -43,7 +43,7 @@ def __init__(self, description, errors=None, **kwargs):
 
 def get_error_path(error):
     """Helper to return correct error path"""
-    if isinstance(error.validator_value, str):
+    if error.validator == "required":
         return list(error.path) + error.validator_value
     else:
         return list(error.path)