diff --git a/docs/source/_static/robots/franka_panda.png b/docs/source/_static/robots/franka_panda.png
new file mode 100644
index 000000000..070f8a8f9
Binary files /dev/null and b/docs/source/_static/robots/franka_panda.png differ
diff --git a/embodichain/lab/gym/utils/gym_utils.py b/embodichain/lab/gym/utils/gym_utils.py
index 42c45da29..2b68281e6 100644
--- a/embodichain/lab/gym/utils/gym_utils.py
+++ b/embodichain/lab/gym/utils/gym_utils.py
@@ -797,7 +797,7 @@ def add_env_launcher_args_to_parser(
         "--num_envs",
         help="The number of environments to run in parallel. "
         "If not given, falls back to the gym config's `num_envs` (default 1).",
-        default=None,
+        default=1,
         type=int,
     )
     parser.add_argument(