Why this no past?

Tell us what’s happening:
My console.logs look correct. Why does this code not pass the tests?

   **Your code so far**
titleCase(str) {
 let ss= str.split(" ");
  let ns = '';

  for(let i =0; i< ss.length; i++){
    for (let j = 0; j < ss[i].length; j++){
      if (j == 0){
        ns += " ";
        ns += ss[i][j].toUpperCase();
        ns += ss[i][j].toLowerCase(); 

  return ns; 

titleCase("I'm a little tea pot");
   **Your browser information:**

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.64 Safari/537.36

Challenge: Title Case a Sentence

Link to the challenge:

I’m reading my post back and I think I figured it out. I think I am getting an uneccesary space at the beginning of the string.

That was it. Disregard