Update app.py

app.py

@@ -69,6 +69,7 @@ for f in rm_files:
 if not os.path.exists(final_model_path):
     with open(final_model_path, "wb") as f:
         http_get(model_url, f)
+    os.chmod(final_model_path, 0o777)
 print("Files downloaded!")
 
 model = Llama(