Why files witch are picked by imagePicker don't go to server?

[ApayRus]

Hi! I have created endpoint "uploads' and tested it with Postman. It works, files appears on the server, and postman shows relevant response with status 200 and body with uploaded files info.

But when I try to post data from my client app (react-native), server sends and error

Unhandled error for request POST /api/uploads/zayavka1/upload?access_token=GAxRixBW5oT3ayErF3IaWqd7zpSpBSsKED3IylR43La7jpbn4uRgKEDK90u7H3P7: Error: No file content uploaded
    at /home/rus/dobrofon-backend/node_modules/loopback-component-storage/lib/storage-handler.js:204:13
    at IncomingForm.<anonymous> (/home/rus/dobrofon-backend/node_modules/formidable/lib/incoming_form.js:107:9)
    at emitNone (events.js:105:13)
    at IncomingForm.emit (events.js:207:7)
    at IncomingForm._maybeEnd (/home/rus/dobrofon-backend/node_modules/formidable/lib/incoming_form.js:557:8)
    at MultipartParser.parser.onEnd (/home/rus/dobrofon-backend/node_modules/formidable/lib/incoming_form.js:426:10)
    at callback (/home/rus/dobrofon-backend/node_modules/formidable/lib/multipart_parser.js:102:31)
    at MultipartParser.write (/home/rus/dobrofon-backend/node_modules/formidable/lib/multipart_parser.js:268:15)
    at IncomingForm.write (/home/rus/dobrofon-backend/node_modules/formidable/lib/incoming_form.js:159:34)
    at IncomingMessage.<anonymous> (/home/rus/dobrofon-backend/node_modules/formidable/lib/incoming_form.js:125:12)
    at emitOne (events.js:115:13)
    at IncomingMessage.emit (events.js:210:7)
    at IncomingMessage.Readable.read (_stream_readable.js:478:10)
    at flow (_stream_readable.js:849:34)
    at resume_ (_stream_readable.js:831:3)
    at _combinedTickCallback (internal/process/next_tick.js:138:11)

And this is my request from client:

  fetch(path, {
    method: 'POST',
    headers: {
      Accept: '*/*',
      'Content-Type': 'multipart/form-data'
    },
    body: formData
  })

And formData looks like:

{
"_parts": Array [
     Array [
       "file[]",
       "file:///data/data/host.exp.exponent/cache/ExperienceData/%2540anonymous%252Freact-native-nav-tutorial-7bcb8d09-73d3-4f7f-87a6-a75e9d9ad295/ImagePicker/09648b04-d674-444c-82d7-c5c50e57726c.jpg",
     ],
   ],
 }

My env info:

{
    "expo": "^27.0.1",
    "native-base": "^2.4.4",
    "react": "16.3.1",
    "react-native": "~0.55.2",
    "react-navigation": "^2.0.1"
  }

$ node -e 'console.log(process.platform, process.arch, process.versions.node)'
linux x64 8.5.0
$ npm ls --prod --depth 0 | grep loopback
├── loopback@3.19.1
├── loopback-boot@2.27.1
├── loopback-component-explorer@6.0.1
├── loopback-component-storage@3.3.1
├── loopback-connector-mongodb@3.4.3
rus@ubuntu16:~/dobrofon-backend$

I tried many things, but I can't figure out what I do wrong. I didn't find any examples with using fetch and loopback-storage (only xhr and angular).
Please, share some ideas about it.

[devpascoe]

@Aparus how did you go? I'm facing a similar issue.

[ZeeshanZafar557]

the same issue I also facing for the last two days.

[kopax]

Hello, I am trying to upload photo in expo and was looking for an example and ended up here,

unfortunately:

This project needs an update
This project uses Expo SDK v20.0.0. If you want to open this project, the author will need to update the project's SDK version.

[tesshsu]

Hi I do have the same issue, we had change another AWS server, then there's no working to upload either which was working great before