Stuck! Any Advice Please

JavaScript
1 
(AnimalClass){
  // Exercise Two: In this exercise you are given a class called AnimalClass.
  // The class will already have the properties 'name', 'noise' on it.
  // You will be adding a method to the prototype called 'speak'
  // Using the 'this' keyword, speak should return the following string:
  // '<name> says <noise>'
  // DO NOT create a new class or object
 AnimalClass.prototype.speak = function(){
   this.speak
   return `<name> says <noise>`;
};
  // Please write your code in the lines above
  return AnimalClass;
}

found the error!

2

That is the issue exactly?