diff --git a/airflow/www/views.py b/airflow/www/views.py
index 8f2104c90b4a8..256d850e0ad8f 100644
--- a/airflow/www/views.py
+++ b/airflow/www/views.py
@@ -2652,7 +2652,7 @@ def _convert_to_date(session, column):
             for dr in dag_states
         ]
 
-        if dag_states:
+        if dag_states and dag_states[-1].data_interval_start and dag_states[-1].data_interval_end:
             last_automated_data_interval = DataInterval(
                 dag_states[-1].data_interval_start, dag_states[-1].data_interval_end
             )