What is the mistake here (Godot)?

Python works with entering lines. Since the code in line 17 is not moved further, it is not recognized that it belongs to the else.

Edit: If not marked, but line 15 would have to be moved further so that it is in the if and the condition in the if itself does not look quite right.

You don’t have to enter the If and the else but the code that belongs to them. So the part would be right:

if abs(velocity.x) > 1:
   sprite_2d.animation = "running"
else:
   sprite_2d.animation = "default"

With the If condition, I can only guess a little what this is intended because if one assumes these are both conditions and these should be fulfilled the left would be necessary. Pure from context, I would like to tap

abs(velocity.x) > 1