Handle service calls that do not refer entity IDs (#31317)

homeassistant/helpers/script.py

@@ -201,6 +201,10 @@ class Script:
                     continue
 
                 entity_ids = data.get(ATTR_ENTITY_ID)
+
+                if entity_ids is None:
+                    continue
+
                 if isinstance(entity_ids, str):
                     entity_ids = [entity_ids]
 

tests/helpers/test_script.py

@@ -1043,6 +1043,7 @@ async def test_referenced_entities():
                     "entity_id": "sensor.condition",
                     "state": "100",
                 },
+                {"service": "test.script", "data": {"without": "entity_id"}},
                 {"scene": "scene.hello"},
                 {"event": "test_event"},
                 {"delay": "{{ delay_period }}"},