Added a script to run, but it broke the Walk animation.

Hi! I'm new to godot and to programing, I wanted to make a little game (platformer).
I did the code for the character and it worked well, but then I added a script to run, and then the animation "Walk" stopped working.

This was the code before adding the script:

extends KinematicBody2D

const moveSpeed = 20
const maxSpeed = 40
const runSpeed= 25
const maxrunSpeed= 45

const jumpHeight = -115
const up = Vector2(0,-1)
const gravity = 10

onready var sprite = $Sprite
onready var animationPlayer = $AnimationPlayer

var motion = Vector2()

func _physics_process(delta):

	motion.y += gravity
	var friction = false

	if Input.is_physical_key_pressed(KEY_D):
		sprite.flip_h = true
		animationPlayer.play("Walk")
		motion.x = min(motion.x + moveSpeed,maxSpeed)

	elif Input.is_physical_key_pressed(KEY_A):
		sprite.flip_h = false
		animationPlayer.play("Walk")
		motion.x = max(motion.x - moveSpeed,-maxSpeed)

	else:
		animationPlayer.play("Idle")
		friction = true

	if is_on_floor():
		if Input.is_physical_key_pressed(KEY_W):
			motion.y = jumpHeight
		if friction == true:
			motion.x = lerp(motion.x ,0,0.5)
	else:
		if friction == true:
			motion.x = lerp(motion.x,0,0.01)

	motion = move_and_slide(motion,up)

This is the code after adding the script:

extends KinematicBody2D

const moveSpeed = 20
const maxSpeed = 40
const runSpeed= 25
const maxrunSpeed= 45

const jumpHeight = -115
const up = Vector2(0,-1)
const gravity = 10

onready var sprite = $Sprite
onready var animationPlayer = $AnimationPlayer

var motion = Vector2()

func _physics_process(delta):

	motion.y += gravity
	var friction = false

	if Input.is_physical_key_pressed(KEY_D):
		sprite.flip_h = true
		animationPlayer.play("Walk")
		motion.x = min(motion.x + moveSpeed,maxSpeed)

	elif Input.is_physical_key_pressed(KEY_A):
		sprite.flip_h = false
		animationPlayer.play("Walk")
		motion.x = max(motion.x - moveSpeed,-maxSpeed)

	else:
		animationPlayer.play("Idle")
		friction = true

	if is_on_floor():
		if Input.is_physical_key_pressed(KEY_W):
			motion.y = jumpHeight
		if friction == true:
			motion.x = lerp(motion.x ,0,0.5)
	else:
		if friction == true:
			motion.x = lerp(motion.x,0,0.01)

	motion = move_and_slide(motion,up)

	if Input.is_physical_key_pressed(KEY_D) and Input.is_physical_key_pressed(KEY_CONTROL):
		sprite.flip_h = true
		animationPlayer.play("Walk")
		motion.x = min(motion.x + runSpeed,maxrunSpeed)

	elif Input.is_physical_key_pressed(KEY_A) and Input.is_physical_key_pressed(KEY_CONTROL):
		sprite.flip_h = false
		animationPlayer.play("Walk")
		motion.x = max(motion.x - runSpeed,-maxrunSpeed)

	else:
		animationPlayer.play("Idle")
		friction = true

	if is_on_floor():
		if Input.is_physical_key_pressed(KEY_W):
			motion.y = jumpHeight

Basically, the "animationPlayer.play("Walk") in the first part, stopped working, but it works in the "run" script.