latin-1 codec error when uploading images to /p/{pack_id}/tunes via Python requests

[Aleexandar]

Hi Astria team 👋

First of all — thank you for your amazing product! It’s really impressive and exciting to work with 🙌

I’m currently building a Telegram bot (in Python) that connects to Astria via the official endpoint:
POST https://api.astria.ai/p/260/tunes

We’re uploading a set of user images to create a new tune, strictly following the documentation. However, we keep running into this server-side error:

Astria error: ‘latin-1’ codec can’t encode characters in position 10–13: ordinal not in range(256)

✅ We’ve double-checked everything:

• Filenames are plain ASCII:new tune, stri
  Hi Astria tea etc.
• No emojis or special characters inou for your amaori Astria team - Field names exactly match the docs:ank you for you
  Hi Astria tea
  Hi Astria team 👋- All images are sent ast of all via Astria team using standard 👋

First of all- Headers are standard

• The server is hosted on Heroku, all encodings are set to UTF-8 (LANG,d exciting LC_CTYPE)

Here’s a simplified version of our code:

files = [
    ("tune[images][]", ("image0.jpg", image_bytes_0, "image/jpeg")),
    ("tune[images][]", ("image1.jpg", image_bytes_1, "image/jpeg")),
    # ...
]

It seems like the API server is trying to decode something as latin-1, even though both filenames and fields are clean ASCII.

❓ Is this a known issue?
Or could we be missing something obvious?

Happy to share logs, request headers or a minimal working example if that helps!

Thanks so much in advance 🙏