andleFiles(fileList) {
    for (let i = 0, numFiles = fileList.length; i < numFiles; i++) {
      const file = fileList[i];
      sendFile(file);
      return;
    }
  }

  var tableStore = {key1: "empty"};
  var concurrentuploads = 0;

  function sendFile(file) {
    table.style.display = 'block';
    const uri = "/upload_anonymous";
    const xhr = new XMLHttpRequest();
    const fd = new FormData();

    tableStore[file.name+file.lastModified] = table.insertRow(-1);
    tableStore[file.name+file.lastModi