Entity animation not playing

{
	"format_version": "1.8.0",
	"animations": {
		"yeti.walk": {
			"loop": true,
			"animation_length": 1.04,
			"bones": {
				"bone": {
					"rotation": {
						"0.0": {
							"vector": {
								"vector": [1.5, 0, 0]
							}
						},
						"0.24": {
							"vector": {
								"vector": [0, 0, 0],
								"easing": "easeInOutSine"
							},
							"easing": "easeInOutSine"
						},
						"0.52": {
							"vector": {
								"vector": [1.5, 0, 0],
								"easing": "easeInOutSine"
							},
							"easing": "easeInOutSine"
						},
						"0.8": {
							"vector": {
								"vector": [0, 0, 0],
								"easing": "easeInOutSine"
							},
							"easing": "easeInOutSine"
						},
						"1.04": {
							"vector": {
								"vector": [1.5, 0, 0],
								"easing": "easeInOutSine"
							},
							"easing": "easeInOutSine"
						}
					}
				},
				"Head": {
					"rotation": {
						"0.0": {
							"vector": {
								"vector": [0, 0, 0]
							}
						},
						"0.28": {
							"vector": {
								"vector": [7, 0, 0],
								"easing": "easeInOutSine"
							},
							"easing": "easeInOutSine"
						},
						"0.52": {
							"vector": {
								"vector": [0, 0, 0],
								"easing": "easeInOutSine"
							},
							"easing": "easeInOutSine"
						},
						"0.8": {
							"vector": {
								"vector": [7, 0, 0],
								"easing": "easeInOutSine"
							},
							"easing": "easeInOutSine"
						},
						"1.04": {
							"vector": {
								"vector": [0, 0, 0],
								"easing": "easeInOutSine"
							},
							"easing": "easeInOutSine"
						}
					}
				},
				"RightArm": {
					"rotation": {
						"0.0": {
							"vector": {
								"vector": [-37.5, 0, 0]
							}
						},
						"0.52": {
							"vector": {
								"vector": [12.5, 0, 0],
								"easing": "easeInOutSine"
							},
							"easing": "easeInOutSine"
						},
						"1.04": {
							"vector": {
								"vector": [-37.5, 0, 0],
								"easing": "easeInOutSine"
							},
							"easing": "easeInOutSine"
						}
					}
				},
				"LeftArm": {
					"rotation": {
						"0.0": {
							"vector": {
								"vector": [12.5, 0, 0]
							}
						},
						"0.52": {
							"vector": {
								"vector": [-37.5, 0, 0],
								"easing": "easeInOutSine"
							},
							"easing": "easeInOutSine"
						},
						"1.04": {
							"vector": {
								"vector": [12.5, 0, 0],
								"easing": "easeInOutSine"
							},
							"easing": "easeInOutSine"
						}
					}
				},
				"RLeg": {
					"rotation": {
						"0.0": {
							"vector": {
								"vector": [12.5, 0, 0]
							}
						},
						"0.52": {
							"vector": {
								"vector": [-30, 0, 0],
								"easing": "easeInOutSine"
							},
							"easing": "easeInOutSine"
						},
						"1.04": {
							"vector": {
								"vector": [12.5, 0, 0],
								"easing": "easeInOutSine"
							},
							"easing": "easeInOutSine"
						}
					}
				},
				"Lleg": {
					"rotation": {
						"0.0": {
							"vector": {
								"vector": [-30, 0, 0]
							}
						},
						"0.52": {
							"vector": {
								"vector": [12.5, 0, 0],
								"easing": "easeInOutSine"
							},
							"easing": "easeInOutSine"
						},
						"1.04": {
							"vector": {
								"vector": [-30, 0, 0],
								"easing": "easeInOutSine"
							},
							"easing": "easeInOutSine"
						}
					}
				}
			}
		},
		"yeti.attack": {
			"animation_length": 1.16,
			"bones": {
				"bone": {
					"rotation": {
						"0.0": {
							"vector": {
								"vector": [0, 0, 0]
							}
						},
						"0.4": {
							"vector": {
								"vector": [0, 0, 0],
								"easing": "easeOutQuad"
							},
							"easing": "easeOutQuad"
						}
					}
				},
				"Body": {
					"rotation": {
						"0.0": {
							"vector": {
								"vector": [0, 0, 0]
							}
						},
						"0.4": {
							"vector": {
								"vector": [-30, 0, 0],
								"easing": "easeInOutQuad"
							},
							"easing": "easeInOutQuad"
						},
						"0.68": {
							"vector": {
								"vector": [10, 0, 0],
								"easing": "easeInCubic"
							},
							"easing": "easeInCubic"
						},
						"0.8": {
							"vector": {
								"vector": [7.5, 0, 0]
							}
						},
						"1.16": {
							"vector": {
								"vector": [0, 0, 0],
								"easing": "easeInOutQuint"
							},
							"easing": "easeInOutQuint"
						}
					}
				},
				"Head2": {
					"rotation": {
						"0.0": {
							"vector": {
								"vector": [0, 0, 0]
							}
						},
						"0.4": {
							"vector": {
								"vector": [22.5, 0, 0],
								"easing": "easeOutQuad"
							},
							"easing": "easeOutQuad"
						},
						"0.68": {
							"vector": {
								"vector": [-5, 0, 0],
								"easing": "easeInOutCubic"
							},
							"easing": "easeInOutCubic"
						},
						"0.92": {
							"vector": {
								"vector": [22.5, 0, 0],
								"easing": "easeOutQuart"
							},
							"easing": "easeOutQuart"
						},
						"1.16": {
							"vector": {
								"vector": [0, 0, 0],
								"easing": "easeInOutCubic"
							},
							"easing": "easeInOutCubic"
						}
					}
				},
				"RightArm": {
					"rotation": {
						"0.0": {
							"vector": {
								"vector": [0, 0, 0]
							}
						},
						"0.4": {
							"vector": {
								"vector": [-115, 22.5, 0],
								"easing": "easeInOutCubic"
							},
							"easing": "easeInOutCubic"
						},
						"0.56": {
							"vector": {
								"vector": [-140, 22.5, 0]
							}
						},
						"0.72": {
							"vector": {
								"vector": [-52.5, 22.5, 0]
							}
						},
						"0.88": {
							"vector": {
								"vector": [-57.5, 22.5, 0]
							}
						},
						"1.16": {
							"vector": {
								"vector": [0, 0, 0],
								"easing": "easeInOutCubic"
							},
							"easing": "easeInOutCubic"
						}
					}
				},
				"LeftArm": {
					"rotation": {
						"0.0": {
							"vector": {
								"vector": [0, 0, 0]
							}
						},
						"0.4": {
							"vector": {
								"vector": [-115, -25, 0],
								"easing": "easeInOutCubic"
							},
							"easing": "easeInOutCubic"
						},
						"0.56": {
							"vector": {
								"vector": [-140, -25, 0]
							}
						},
						"0.8": {
							"vector": {
								"vector": [-52.5, -22.5, 0],
								"easing": "easeInOutQuad"
							},
							"easing": "easeInOutQuad"
						},
						"0.88": {
							"vector": {
								"vector": [-55, -25, 0]
							}
						},
						"1.04": {
							"vector": {
								"vector": [0, 0, 0],
								"easing": "easeInOutCubic"
							},
							"easing": "easeInOutCubic"
						}
					}
				}
			}
		}
	},
	"geckolib_format_version": 2,
	"geometry.animations": {
		"texturewidth": 64,
		"textureheight": 64
	}
}

gistfile1.txt

private <E extends IAnimatable> PlayState animationPredicate (AnimationEvent<E> event)
	{
		if (!(limbSwingAmount > -0.15F && limbSwingAmount < 0.15F))
		{
			event.getController().setAnimation(new AnimationBuilder().addAnimation("yeti.walk", true));
			return PlayState.CONTINUE;
		}
		else if (this.isAggressive())
		{
			event.getController().setAnimation(new AnimationBuilder().addAnimation("yeti.attack", true));
			return PlayState.CONTINUE;
		}
		return PlayState.STOP;
	}
  
  @Override
	public void registerControllers (AnimationData animationData)
	{
		animationData.addAnimationController(new AnimationController<>(this, "controller", 0, this::animationPredicate));
	}

	@Override
	public AnimationFactory getFactory ()
	{
		return this.factory;
	}