Update app.py

app.py

@@ -17,8 +17,8 @@ os.environ["HF_HUB_ENABLE_HF_TRANSFER"] = "1"
 
 llm = Llama(
     model_path=hf_hub_download(
-        repo_id=os.environ.get(REPO_ID),
-        filename=os.environ.get(MODEL_FILE),
+        repo_id=REPO_ID,
+        filename=MODEL_FILE,
     ),
     n_ctx=4096,
     n_gpu_layers=-1,