[Android] Demo apps are throwing errors when upload files.  #224

Which platform(s) does your issue occur on?

Android

Please, provide the following version numbers that your issue occurs with:

• CLI: 5.4.0
• Runtime(s):5.4.0
• Plugin(s): background-http 3.4.1

Please, tell us how to recreate the issue in as much detail as possible.

1. Run the demo-server (npm i && node server 8080)
2. Run demo (demo, demo-angular, demo-vue)
3. Upload file (both upload and multi-part)

Actual: The status of the upload is error.
Expected: The upload should be successful.

The images bellow are from demos, describing the response statuses:

Is there any code involved?

Demo apps from the repo.