Update app.py

app.py

@@ -89,7 +89,7 @@ class ChatWrapper:
         try:
             history = history or []
             # Set OpenAI key
-            
+            chain = get_chain(vectorstore)
             # Run chain and append input.
             output = chain({"question": inp, "chat_history": history})["answer"]
             history.append((inp, output))
@@ -111,7 +111,6 @@ with block:
         embeddings.change(on_value_change, embeddings)
     
     vectorstore = load_vectorstore(embeddings.value)
-    chain = get_chain(vectorstore)
 
     chatbot = gr.Chatbot()