Interaction.defer is broken after #2579

[tibue99]

Summary

#2579 breaks interaction.defer()

Reproduction Steps

Run the code below or any other code that uses interaction.defer()

Minimal Reproducible Code

import discord

bot = discord.Bot()


@bot.slash_command()
async def hey(ctx):
    await ctx.defer()
    await ctx.respond("Hey!")

bot.run("")

Expected Results

No error

Actual Results

Ignoring exception in command hey:
Traceback (most recent call last):
  File "C:\Users\Timo\Desktop\pythonProject\.venv\Lib\site-packages\discord\commands\core.py", line 138, in wrapped
    ret = await coro(arg)
          ^^^^^^^^^^^^^^^
  File "C:\Users\Timo\Desktop\pythonProject\.venv\Lib\site-packages\discord\commands\core.py", line 1082, in _invoke
    await self.callback(ctx, **kwargs)
  File "C:\Users\Timo\Desktop\pythonProject\main.py", line 8, in hey
    await ctx.defer()
  File "C:\Users\Timo\Desktop\pythonProject\.venv\Lib\site-packages\discord\interactions.py", line 826, in defer
    adapter.create_interaction_response(
  File "C:\Users\Timo\Desktop\pythonProject\.venv\Lib\site-packages\discord\webhook\async_.py", line 530, in create_interaction_response
    payload["data"]["attachments"] = attachments
    ~~~~~~~^^^^^^^^
KeyError: 'data'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:\Users\Timo\Desktop\pythonProject\.venv\Lib\site-packages\discord\bot.py", line 1149, in invoke_application_command
    await ctx.command.invoke(ctx)
  File "C:\Users\Timo\Desktop\pythonProject\.venv\Lib\site-packages\discord\commands\core.py", line 435, in invoke
    await injected(ctx)
  File "C:\Users\Timo\Desktop\pythonProject\.venv\Lib\site-packages\discord\commands\core.py", line 146, in wrapped
    raise ApplicationCommandInvokeError(exc) from exc
discord.errors.ApplicationCommandInvokeError: Application Command raised an exception: KeyError: 'data'

Intents

System Information

• Python v3.12.1-final
• py-cord v2.6.1-final
• aiohttp v3.11.11
• system info: Windows 11 10.0.26100

Checklist

• I have searched the open issues for duplicates.
• I have shown the entire traceback, if possible.
• I have removed my token from display, if visible.

Additional Context

No response

[Paillat-dev]

I wonder why using pydantic would be a good idea... Anyhow. I'll see if I can pr a fix unless @Icebluewolf wants to do it since its his pr

[Icebluewolf]

It's actually #2679 that breaks it. Will fix soon.

[Lulalaby]

should i revert for now?

[Paillat-dev]

#2679 is not merged, how would it cause an issue on master ?

[Icebluewolf]

I "fixed" #2679's issue while writing #2579 and the "fix" never got removed from #2579 when I split it into 2 PRs.

[Dorukyum]

Can reproduce.

[Dorukyum]

Fixed in 1ca07cb.