diff --git a/log10/load.py b/log10/load.py
index 3d3e93b1..95f401b5 100644
--- a/log10/load.py
+++ b/log10/load.py
@@ -705,7 +705,11 @@ def wrapper(*args, **kwargs):
                     while result_queue.empty():
                         pass
                     result = result_queue.get()
-                    completionID = result["completionID"]
+
+                    if result is None:
+                        return output
+
+                    completionID = result.get("completionID")
                     last_completion_response_var.set(result)
 
             with timed_block("result call duration (sync)"):