diff --git a/app/main/controller/presto_controller.py b/app/main/controller/presto_controller.py
index 83d5fa30..b5fb2c61 100644
--- a/app/main/controller/presto_controller.py
+++ b/app/main/controller/presto_controller.py
@@ -39,7 +39,7 @@ def post(self, action, model_type):
                     if result:
                         result["is_search_result_callback"] = True
                 callback_url = data.get("body", {}).get("raw", {}).get("callback_url", app.config['CHECK_API_HOST']) or app.config['CHECK_API_HOST']
-                if result and data.get("body", {}).get("raw", {}).get("requires_callback"):
+                if result and result.get("results") is not None and data.get("body", {}).get("raw", {}).get("requires_callback"):
                     app.logger.info(f"Sending callback to {callback_url} for {action} for model of {model_type} with body of {result}")
                     Webhook.return_webhook(callback_url, action, model_type, result)
                 return_value = {"action": action, "model_type": model_type, "data": result}
diff --git a/app/main/lib/elastic_crud.py b/app/main/lib/elastic_crud.py
index b28e3b3c..e8732d3b 100644
--- a/app/main/lib/elastic_crud.py
+++ b/app/main/lib/elastic_crud.py
@@ -54,7 +54,7 @@ def get_blocked_presto_response(task, model, modality):
     callback_url = Presto.add_item_callback_url(app.config['ALEGRE_HOST'], modality)
     if requires_encoding(obj):
         blocked_results = []
-        for model_key in obj.pop("models", []):
+        for model_key in obj.get("models", []):
             if model_key != "elasticsearch" and not obj.get('model_'+model_key):
                 response = get_presto_request_response(model_key, callback_url, obj)
                 blocked_results.append({"model": model_key, "response": Presto.blocked_response(response, modality)})