Update app.py

change tokenizer to one provided directly from meta: meta-llama/Llama-2-7b-hf

app.py

@@ -42,7 +42,8 @@ model = AutoModelForCausalLM.from_pretrained(
     trust_remote_code=True,
 )
 tokenizer = AutoTokenizer.from_pretrained(
-    "NousResearch/Llama-2-7b-hf",
+#    "NousResearch/Llama-2-7b-hf",
+    "meta-llama/Llama-2-7b-hf",    
     trust_remote_code=True,
     tokenizer_class=LlamaTokenizer,
 )