diff --git a/utils/notification_service.py b/utils/notification_service.py
index d232809a64eead..969107b3f88481 100644
--- a/utils/notification_service.py
+++ b/utils/notification_service.py
@@ -634,6 +634,9 @@ def get_reply_blocks(self, job_name, job_result, failures, device, text):
         ]
 
     def get_new_model_failure_blocks(self, with_header=True):
+        if self.prev_ci_artifacts is None:
+            return {}
+
         sorted_dict = sorted(self.model_results.items(), key=lambda t: t[0])
 
         prev_model_results = {}