diff --git a/Dockerfile b/Dockerfile
index 14c911996d760f4d1d210e0999e19733bab82473..3faa31c6611551ab6adcf73be938db5ccd7a8961 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM python:3-slim
+FROM python:3.9-slim
 
 WORKDIR /app
 
diff --git a/workers/doc_indexer.py b/workers/doc_indexer.py
index efd34d2d03ac9c5d3c4b3ebea9c6eb5c4d571c9a..4e806671e406b537466ab45f2a55e0106d1281af 100644
--- a/workers/doc_indexer.py
+++ b/workers/doc_indexer.py
@@ -161,7 +161,7 @@ def index_docs(channel, method, properties, body):
         #logging.error(json.dumps(rep, indent=4))
         try:
             logging.error(json.dumps([
-                                        item.get("error", {}).get("reason") 
+                                        item.get("index", {}).get("error", {}).get("reason") 
                                         for item in rep.get("items", [])
                                      ],
                                      indent=4))