text: function fetchItemPicURL() {
    fetch("/item-pic-upload-url")
      .then(response => {
        return response.text();
      })
      .then(itemURL => {
        const itemForm = document.getElementById("ad-form");
        itemForm.action = itemURL;
      });
  }
  function buildUI() {
    fetchItemPicURL();
  }
  