LaggedStart not working

Im trying to use the LaggedStart() animation but i keep getting errors

Error message is: "object of type 'ShowCreation' has no len()"

`self.play(
LaggedStart(*[
ShowCreation(obj1, run_time=0.5),
ShowCreation(obj2, run_time=0.5),
Write(obj2, run_time=0.5)]
)
)`

The animations on their own work but i want then to start slighty after one another.

ive also tried without the array and also AnimationGroup() with lag_ratio=0.5 and the animations worked but they started at the exact same time

查看 manim/animation/animation.py 中的 LaggedStart 類別，了解它如何處理動畫。此錯誤表示 ShowCreation 物件被錯誤地處理。檢查 __len__ 方法或動畫的傳遞方式。執行提供的程式碼片段以重現該錯誤，然後檢查 AnimationGroup 和 LaggedStart 的建構函式。

由索引模型根據 Issue 內容生成。