Update app.py

app.py

@@ -15,7 +15,7 @@ def diagnose_machine_fault(user_input):
             "Content-Type": "application/json"
         },
         json={
-            "model": "mixtral-8x7b-32768",  # You can also try gemma-7b-it or llama2-70b-chat
+            "model": "llama3-8b-8192",  # Use current valid model
             "messages": [
                 {"role": "system", "content": "You are a helpful assistant diagnosing industrial machine faults based on user descriptions."},
                 {"role": "user", "content": user_input}