get_chat crashes when Telegram returns unique_gift_colors

[alragi0]

Environment

• OS: Windows 11 (64-bit)
• Python: 3.11.x (installation path: C:\Users\JC\AppData\Roaming\Python\Python314)
• pyTelegramBotAPI: 4.31.0
• Bot: long-polling worker running main1.py

Steps to Reproduce

1. Register a handler that calls bot.get_chat(call.from_user.id) inside a callback query worker.
2. Run the bot and trigger the handler from a user/chat that exposes the new Telegram field unique_gift_colors.
3. Observe the worker thread.

Actual Result
bot.get_chat raises NotImplementedError inside telebot.types.UniqueGiftColors.de_json because the library tries to parse unique_gift_colors but the dataclass has not been implemented yet. The worker thread crashes with the following stack trace:

Traceback (most recent call last):
  File "e:\my\starmarket bot\main1.py", line 5219, in worker
    chat = bot.get_chat(call.from_user.id)
  File "C:\Users\JC\AppData\Roaming\Python\Python314\site-packages\telebot\__init__.py", line 1572, in get_chat
    return types.ChatFullInfo.de_json(
        apihelper.get_chat(self.token, chat_id)
    )
  File "C:\Users\JC\AppData\Roaming\Python\Python314\site-packages\telebot\types.py", line 804, in de_json
    obj['unique_gift_colors'] = UniqueGiftColors.de_json(obj['unique_gift_colors'])
  File "C:\Users\JC\AppData\Roaming\Python\Python314\site-packages\telebot\types.py", line 89, in de_json
    raise NotImplementedError
NotImplementedError

Expected Result
bot.get_chat should deserialize ChatFullInfo even when the Telegram Bot API includes unique_gift_colors, or ignore that field until support ships, instead of raising NotImplementedError.

Additional Notes

• The error started appearing after Telegram added unique_gift_colors to ChatFullInfo. No local code touches that field.
• Temporary workaround is to avoid calling get_chat for chats that include unique_gift_colors, but an official fix is required in telebot.types.UniqueGiftColors.

[coder2020official]

I think this was fixed by #2559

[coder2020official]

Try checking the git version; we haven't released the fix since

[alragi0]

Thanks, all done.