Threads image posts fail at createSingleMediaContent with OAuthException code=1 subcode=2207052, while text-only posts succeed

Description

Summary

On a self-hosted Postiz setup, Threads text-only posts publish successfully, but Threads posts that include an image consistently fail.

The failure happens during media container creation:

• ThreadsProvider.createSingleMediaContent
• Meta returns:
• OAuthException
• code: 1
• error_subcode: 2207052

This reproduces across multiple image hosts and both new/old images, so it does not look like a single bad file or a single hostname problem.

Environment

• Postiz container image: ghcr.io/gitroomhq/postiz-app:latest
• Postiz app version: 1.0.0
• Deployment: self-hosted
• Threads integration: active, text-only posting works

What works

• Threads text-only posts publish successfully.

What fails

Threads posts with image media fail, including:

1. Long text + image/thread flow
2. Single image + short text retry
3. Re-trying with:

• self-hosted upload URL
• object storage public URL
• custom domain over the same object storage

1. Re-trying with:

• newly generated image
• previously known-good old image

Error from Meta / Threads

{
"error": {
"message": "An unknown error occurred",
"type": "OAuthException",
"code": 1,
"error_subcode": 2207052,
"is_transient": false,
"error_user_title": "Media download failed. The media URI does not meet requirements.",
"error_user_msg": "Could not fetch media from the provided URI. See: https://developers.facebook.com/docs/instagram-platform/instagram-graph-api/reference/ig-user/media#creating"
}
}


###  Reproduction steps

just post threads

###  Expected behavior

able to post

###  Actual Behavior with Screenshots

can not post.

###  Operating system

Linux

###  Node Version

1.0.0

###  Provide any additional context for the Bug.

_No response_

###  Have you spent some time to check if this bug has been raised before?

- [x] I checked and didn't find similar issue

### Are you willing to submit PR?

None