Update app.py

app.py

@@ -73,7 +73,7 @@ from llama_index.core.llms import ChatMessage
 
 
 HF_TOKEN = os.environ.get("HF_TOKEN", None)
-MODEL_ID = ["google/gemma-2-27b-it"]
+MODEL_ID = "google/gemma-2-27b-it"
 MODEL_NAME = MODEL_ID.split("/")[-1]
 
 os.environ["HF_HUB_ENABLE_HF_TRANSFER"] = "1"