Error: Multipart: Boundary not found

[coucoseth]

Describe the bug

i am trying to upload files to my nodejs server from react native and my code works fine with other versions of axios but the latest 0.25.0. i had to downgrade to 0.21.4

To Reproduce

const data = new FormData();
    data.append('firstName', firstName);
    data.append('lastName', lastName);
    data.append('img', img);
const a = axios.create({
    headers: {
      'Content-Type': 'multipart/form-data',
    },
  });
  let baseURL = `https://3be7-1672-20-7432443.ngrok.io/${url}`;
  return a
    .post(baseURL, data)
    .then(response => {
      console.log('api response', response.data);
      return response.data;
    })
    .catch(error => {
      console.log(error)
    });

Expected behavior

i expected my file to be uploaded to my API

Environment

• Axios Version 0.25.0
• OS: iOS 12.1.0
• React Native 0.67.0

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