update tokenizer reference

app.py

@@ -12,7 +12,8 @@ client = OpenAI(
 
 # the tokenizer complains later after gradio forks without this setting.
 os.environ["TOKENIZERS_PARALLELISM"] = "false"
-tokenizer = AutoTokenizer.from_pretrained("meta-llama/Meta-Llama-3.1-8B-Instruct")
+# use unofficial copy of Llama to avoid access restrictions.
+tokenizer = AutoTokenizer.from_pretrained("mlabonne/Meta-Llama-3.1-8B-Instruct-abliterated")
 
 # Initial prompt
 initial_prompts = {