upload_chunk_invalid

Chunk contents are not canonical base64.

How to resolve: Encode the exact bytes as padded standard base64, or use utf8.

Error shape

Every Spacefast API error is an RFC 9457 problem document, served as application/problem+json.

code is stable and machine-readable.
type links to this page.
title is a short label.
status repeats the HTTP status.
detail explains this occurrence.
pointer, when present, is an RFC 6901 JSON Pointer at the offending field in the request body.
details, when present, carries structured context.

Match on code, never on detail.

{
  "type": "https://spacefast.com/docs/errors/upload_chunk_invalid/",
  "title": "Upload chunk invalid",
  "status": 400,
  "detail": "Chunk contents are not canonical base64.",
  "code": "upload_chunk_invalid",
  "requestId": "req_4mz0v8qk"
}

See the full list of error codes in the error reference.