Request body is null after upgrade from 1.4.4 to 1.4.5-lts.1

my request like this:

` POST http://localhost:8000/cos/uploadOneFile
Content-Type: multipart/form-data; boundary=WebAppBoundary

--WebAppBoundary
Content-Disposition: form-data; name="param1";
Content-Type: text/plain

abc
--WebAppBoundary
Content-Disposition: form-data; name="upload"; filename="event/test1.jpg"
Content-Type: image/jpeg

< /root/test-00-04-49-489.jpg `

and I cannot get param1 from request body, and my code like this

`router.post('/uploadOneFile', upload.single('upload'), (request, response) => {
let { param1 } = request.body;
}`