Problems about Sprite Animation

[chilly mirage]

I just copy animations and then this happend..
But why does it happend?
Idk is it good?
I animated Darnell and suddenly, it changed to unknown animation, sprites are around!! 🥴

[raven lake]

don't worry its not a serious problem. just click the animation and select done, your animation will go back. do this to all your animation