Cannot upload 250x250px Publisher Logo in Add-on Listing Details; returns "bad_request_parameter" error.

Product & version: Adobe Express Developer Console (Web)

Platform: Chrome (Latest version) - Also tested in Incognito and alternative browsers.

Steps to reproduce:

1. Navigate to the Add-on Submission portal and go to the "Listing details" > "Publisher profile" section.

2. Fill out all required text fields (Publisher Name, Website, Description).

3. Try to upload a valid 250x250px image (tested both PNG and JPEG formats, under 1MB, with a simple filename like logo.png) into the "Publisher logo" drag-and-drop box.

4. Observe that the file fails to upload.

5. Open the browser's Developer Tools > Network tab and observe the failed API request returning the following JSON error: {"errorMessage": "Invalid code: DEFAULT", "errorReason": "bad_request_parameter"}.

Expected result: The 250x250px image should upload successfully, attach to the Publisher profile, and allow the submission process to continue.

Actual result: The upload is rejected by the backend server with a "bad_request_parameter" error, completely blocking the publisher from completing their add-on submission.

Attachments:

curl 'https://ffc-addon.adobe.io/v1/images/4edfbcb4-edf4-467b-834c-231e9c4e6915' \
  -H 'x-org-id: [REDACTED_ORG_ID]@AdobeOrg' \
  -H 'Authorization: Bearer [REDACTED]' \
  -H 'Referer: https://new.express.adobe.com/' \
  -H 'x-api-key: in-app-submission-express' \
  -H 'traceparent: 00-d5b8c9788111e6ff09004c22298688fa-420193f1c245742a-01' \
  -H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.0.0 Safari/537.36' \
  -H 'accept: application/vnd.adobe-ffcaddon.response+json' \
  --data-binary '[IMAGE_FILE_PAYLOAD]'