请求后获得400状态码使用节点JS Express

我有以下代码将文档发布到特定的位置。 一切都是正确的，但不知何故，我得到了400错误的请求。 有人可以build议为什么会这样。

以下是我的代码。

function storeDocuments(req, res, tokenKey, data) { var uniqueCode = getClientCode(req, res); var filePath = path.normalize(data.pdfURL); var boundaryKey = Math.floor(Math.random() * 1E16); var options = { method: 'POST', url: 'https://api.fundpress.io/docloader/adddocument', headers: { 'content-type': 'multipart/form-data; charset=utf-8; boundary=---' + boundaryKey, 'cache-control': 'no-cache', 'X-KSYS-TOKEN': tokenKey }, formData: { file: { value: fs.createReadStream(filePath), options: { filename: "performance_report.pdf", contentType: 'application/pdf' } }, cultureCode: res.locals.locale, title: uniqueCode, meta: '{ "doctype":{ "value":[' + uniqueCode + '] } }', clientCode: uniqueCode } }; logger.info('Making request to: ', options.url); request(options, function (error, response, body) { if (!error && response.statusCode === 200) { logger.info('Request Completed: ', options.url, 'BODY_LENGTH: ', (body && body.length)); } else { if (response && response.statusCode === 400) { logger.warn('Upload Request failed with 400 (Bad Request), URL:', options.url); logger.warn('Upload Request failed with 400 (Bad Request), BODY:', body); logger.warn('Upload Request failed with 400 (Bad Request), ERROR:', error); } else { logger.error('Upload Request error, URL:', options.url); logger.error('Upload Request error, STATUS_CODE:', response && response.statusCode); logger.error('Upload Request error, BODY:', body); logger.error('Upload Request error, ERROR:', error); } } }); res.end(); }