'Content-Type': 'multipart/form-data' Can not work normally

I use {‘Content-Type’: ‘multipart / form-data’} to upload files but not work I use the following code：

let formBox = new FormData();
formBox.append('file', files[0]);
axios({
	method: 'post',
	url: api.pushZipFile,
	data: formBox,
	headers: {'Content-Type': 'multipart/form-data'}
})

Return the following results：

I refer to Issues to find a solution, but it did not succeed. https://github.com/mzabriskie/axios/issues/318

[tmaly1980]

I get the same ‘[object Object]’ string in the payload. Anyone figure this out?

[yss14]

Got into the same problem. Applying your workaround, do you also see as request payload in chrome [object Object]?