Update app.py

app.py

@@ -41,7 +41,7 @@ config = AutoConfig.from_pretrained(model_name)
 tokenizer = AutoTokenizer.from_pretrained(model_name)
 
 tokenizer_info = xgr.TokenizerInfo.from_huggingface(
-    tokenizer, vocab_size=config.vocab_size
+    tokenizer, vocab_size=len(tokenizer)
 )
 
 grammar_compiler = xgr.GrammarCompiler(tokenizer_info)