Uncaught TypeError: Illegal invocation

• Solution for error uncaught TypeError: Illegal invocation

  <!-- processData: false, to ajax settings -->
  <script>
  $('#form').on('submit', function(e){
      e.preventDefault();
      var formData = new FormData($(this)[0]);
      $.ajax({
          type: "POST",
          dataType: "json",
          processData: false,
          url: "/add-record",
          data: formData,
          success: function(data){
              return 'response';
              console.log(data);
          }
      }); 
  });
  </script>
  

  Add processData: false, as key/value pair to ajax settings to avoid the error Uncaught TypeError: Illegal invocation while calling ajax on form submit.

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