const form = new FormData();
form.append('chunk', '<string>');
form.append('application_id', '<string>');

const options = {method: 'POST', headers: {'X-API-Key': '<api-key>'}};

options.body = form;

fetch('https://adp-global.laiye.com/open/agentic_engine/laiye/files/upload', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "code": "<string>",
  "message": "<string>",
  "tips": "<string>",
  "data": {}
}