Update app.py

app.py

@@ -83,7 +83,7 @@ def get_conversation_chain(vectorstore, tokenH):
     def generate_response(messages):
         try:
             completion = client.chat.completions.create(
-                model="mistralai/Mistral-7B-Instruct-v0.2", 
+                model="mistralai/Mistral-7B-Instruct-v0.3", 
                 messages=messages, 
                 max_tokens=500
             )