Multipart Upload Throws Error on Expo RN App

[shoxter]

openapi-fetch version

0.15.0

Description

I am trying to upload a file to my backend -- it works with Axios but breaks with openapi-fetch. I've attached a picture of the use case below. The variables are all correct and swapping openapi-fetch for Axios fixes the issue.

Error:

Reproduction

1. Create expo v54 react native app
2. Install openapi-fetch and openapi-typescript
3. Try to call client.POST with formData on Android physical devices
4. It breaks

Expected result

The upload should succeed.

Extra

• I’m willing to open a PR (see CONTRIBUTING.md)