Update app.py

app.py

@@ -50,7 +50,7 @@ def get_json_file(json_docs):
     with open(temp_filepath, "wb") as f:
         f.write(json_docs.getvalue())
     json_loader = JSONLoader(file_path = temp_filepath,
-                            jq_schema = None,
+                            jq_schema = '.messages[].content',
                             text_content=False)
     json_doc = json_loader.load()
     return json_doc