Update app.py

app.py

@@ -56,7 +56,7 @@ def get_json_file(docs):
     with open(temp_filepath, "wb") as f:
         f.write(docs.getvalue())
         f.seek(0)
-        json_loader = JSONLoader(temp_filepath.name,
+        json_loader = JSONLoader(f.name,
                                  jq_schema='.messages[].content',
                                  text_content=False)
         json_doc = json_loader.load()