[Invalid property [prop] set to [value] Missing plugin?]

Im getting a console error that says "Invalid property effectVelocity set to 0.06666666666666667 Missing plugin? gsap.registerPlugin()" I'm just using TweenMax and it just started doing this. Im using DOM and canvas to get the animation. I have noticed if I shrink the height of the window it functions properly but I still get the invalid effectVelocity.

 

https://toddportfoliotest.000webhostapp.com/dist/index.html

 

This is the im using that targets the TweenMax

class WrapEffect {
  constructor(material) {_defineProperty(this, "update",

    isScrolling => {
      // update velocity
      this.scrollingContainer =
      this.scrollingContainer ||
      document.scrollingElement ||
      document.documentElement;
      this.velocity =
      (window.scrollY || this.scrollingContainer.scrollTop) - this.oldScrollTop;
      this.oldScrollTop = window.scrollY || document.documentElement.scrollTop;

      // ease the effect velocity
      if (this.effectTween) {
        this.effectTween.kill();
      }
      if (
      this.velocity !== 0 ||
      this.material.uniforms.effectVelocity.value > 0.0)
      {
        this.effectTween = TweenLite.to(this, 0.5, {
          effectVelocity: isScrolling ? Math.abs(this.velocity) / 15 : 0,
          onUpdate: () => {
            this.material.uniforms.effectVelocity.value = this.effectVelocity;
          },
          ease: Power2.easeOut });

      }
    });this.material = material;this.oldScrollTop = 0;this.velocity = 0;}}