diff --git a/openapi-config.yaml b/openapi-config.yaml
index 4c30e23..71c0332 100644
--- a/openapi-config.yaml
+++ b/openapi-config.yaml
@@ -11,7 +11,7 @@ servers:
 #  url: http://127.0.0.1:5000
 termsOfService: http://robokop.renci.org:7055/tos?service_long=ARAGORN&provider_long=RENCI
 title: ARAGORN
-version: 2.4.12
+version: 2.4.13
 tags:
 - name: translator
 - name: ARA
diff --git a/src/service_aggregator.py b/src/service_aggregator.py
index 658845f..277244c 100644
--- a/src/service_aggregator.py
+++ b/src/service_aggregator.py
@@ -552,7 +552,7 @@ async def add_provenance(message):
     each knowledge_graph edge and add an aggregated knowledge source of infores:robokop to it"""
     new_provenance = {"resource_id": "infores:robokop", "resource_role": "aggregator_knowledge_source",
                       "upstream_resource_ids": ["infores:automat-robokop"]}
-    for edge in message["message"]["knowledge_graph"]["edges"].values():
+    for edge in message["message"].get("knowledge_graph",{}).get("edges",{}).values():
         edge["sources"].append(new_provenance)
     return message
 
@@ -984,7 +984,7 @@ async def combine_messages(answer_qnode, original_query_graph, lookup_query_grap
     result["message"]["knowledge_graph"] = pydantic_kgraph.dict()
     for rm in result_messages:
         if "auxiliary_graphs" in result["message"]:
-            result["message"]["auxiliary_graphs"].update(rm["message"]["auxiliary_graphs"])
+            result["message"]["auxiliary_graphs"].update(rm["message"].get("auxiliary_graphs", {}))
     # The result with the direct lookup needs to be handled specially.   It's the one with the lookup query graph
     lookup_results = []  # in case we don't have any
     for result_message in result_messages: