From 7fb25b4154d608fe9d2dbb2bdfcb6b3374c60e2d Mon Sep 17 00:00:00 2001
From: Hristo G <53634432+izo0x90@users.noreply.github.com>
Date: Fri, 13 Oct 2023 15:03:32 -0400
Subject: [PATCH] Add graceful fallback for ES vectorstore when content field
 is missing (#11726)

- **Description:**
- If the Elasticsearch field used for Langchain > Document.page_content
is missing because the specific document is
        somehow malformed fail gracefully.

  - **Tag maintainer:**
    - @joemcelroy
---
 libs/langchain/langchain/vectorstores/elasticsearch.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libs/langchain/langchain/vectorstores/elasticsearch.py b/libs/langchain/langchain/vectorstores/elasticsearch.py
index f8a198dec9..be034547b8 100644
--- a/libs/langchain/langchain/vectorstores/elasticsearch.py
+++ b/libs/langchain/langchain/vectorstores/elasticsearch.py
@@ -775,7 +775,7 @@ class ElasticsearchStore(VectorStore):
             docs_and_scores.append(
                 (
                     Document(
-                        page_content=hit["_source"][self.query_field],
+                        page_content=hit["_source"].get(self.query_field, ""),
                         metadata=hit["_source"]["metadata"],
                     ),
                     hit["_score"],