Update app.py

app.py

@@ -21,13 +21,13 @@ client = InferenceClient("Qwen/Qwen2-7B-Instruct")
 #         model="Qwen/Qwen2-7B-Instruct",
 #         temperature=0.8,)
 
-qa = RetrievalQA.from_chain_type(
-        llm=client,
-        chain_type="stuff",
-        retriever=retriever,
-        chain_type_kwargs=chain_type_kwargs,
-        return_source_documents=True
-    )
+# qa = RetrievalQA.from_chain_type(
+#         llm=client,
+#         chain_type="stuff",
+#         retriever=retriever,
+#         chain_type_kwargs=chain_type_kwargs,
+#         return_source_documents=True
+#     )
 
 
 def respond(