From aa0f5e35ba8fa4df1e5e2213e966e8f250364419 Mon Sep 17 00:00:00 2001
From: vmoens <vincentmoens@gmail.com>
Date: Mon, 9 Oct 2023 11:55:07 +0100
Subject: [PATCH] amend

---
 tensordict/tensorclass.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tensordict/tensorclass.py b/tensordict/tensorclass.py
index 657cb814e..75ec1f1ef 100644
--- a/tensordict/tensorclass.py
+++ b/tensordict/tensorclass.py
@@ -498,7 +498,7 @@ def _setitem(self, item: NestedKey, value: Any) -> None:  # noqa: D417
     if isinstance(item, str) or (
         isinstance(item, tuple) and all(isinstance(_item, str) for _item in item)
     ):
-        raise ValueError("Invalid indexing arguments.")
+        raise ValueError(f"Invalid indexing arguments: {item}.")
 
     if not is_tensorclass(value) and not isinstance(
         value, (TensorDictBase, numbers.Number, Tensor, MemmapTensor)