Animation Error | "[texture] must have at least one key to cache for blending."

[noahh]

Godot Version

Godot 4.2.1

Question

I’ve been getting this error when playing animations:

E 0:00:01:0294   _update_caches: AnimationMixer: 'playerWalkSide', Value Track:  'Sprite2D:texture' must have at least one key to cache for blending.
  <C++ Error>    Condition "anim->track_get_key_count(i) == 0" is true. Continuing.
  <C++ Source>   scene/animation/animation_mixer.cpp:659 @ _update_caches()

Code:

	func _physics_process(delta):
	
	velocity = Vector2(0,0)
	
	if Input.is_action_pressed("left"):
		velocity.x -= speed
		$Sprite2D.flip_h = true
		$AnimationPlayer.play("playerWalkSide")
		lastKeyPressed = "left"else:
		$AnimationPlayer.stop()
       # Other if statements
    else:
		$AnimationPlayer.stop()

From what I read from the error, I might be missing something relating to cache, though I am unsure on what that is. How can I fix this?

(P.S. It’s my first forum post, sorry for any missing necessary information and other mistakes.)

[pennyloafers]

The problem is related to “key” frames. The animation track for the sprite2d has a blending option enabled, but no direction on how to blend without the key frames.

You need to look at the animation panel

[noahh]

Thanks for this. I fixed the issue by deleting unused animation tracks.