Unity keeps saying that the "Sequence contains no elements"

Questions & Answers
,
1

I’m trying to drag a sprite into the scene window, but when ever I do that Unity throws an error saying

“InvalidOperationException: Sequence contains no elements”

I am making a 2D game, using Unity version 2021.3.0f1 Personal.

2

Do you have the Animator tab open when you drag the sprite into the scene?

Check in the Animator → Layer tab for the "Base Layer".
If doesn’t exist, create your first animator.

That solved this problem for me.

3

I kept having the same error, specifically using the Tile Palette.

Never caused any actual issues for me though ¯_(ツ)_/¯ So I just ignore it.