Update app.py

app.py

@@ -17,6 +17,8 @@ adapter_model_id = "vojay/Llama-2-7b-chat-hf-mental-health"
 model = AutoModelForCausalLM.from_pretrained(model_id, torch_dtype=torch.float16)
 model.load_adapter(adapter_model_id)
 
+tokenizer = AutoTokenizer.from_pretrained(model_id)
+
 
 def get_base_prompt():
     return """