Bad transparency mask for croissants cog

[leo-chartier]

Describe the bug

This bug seems to appear when a Discord user with an animated profile picture triggers the croissant cog.

To Reproduce

Steps to reproduce the behavior:

1. Create a Discord account
2. Buy Nitro
3. Set an animated profile picture
4. Go on a server where the bot is
5. Send a message that starts with Je paye les croissants

Expected behavior

Get a response similar to this one:

Actual behavior

Nothing happens on Discord. Behind the scenes, the bot raises and error:

Mar 15 10:53:37 warn python3[110192]:     await coro(*args, **kwargs)
Mar 15 10:53:37 warn python3[110192]:   File "/home/warrior/actions-runner/_work/Algosup-Discord/Algosup-Discord/cogs/croissants.py", line 33, in on_receive_message
Mar 15 10:53:37 warn python3[110192]:     await self.__send_croissants(message)
Mar 15 10:53:37 warn python3[110192]:   File "/home/warrior/actions-runner/_work/Algosup-Discord/Algosup-Discord/cogs/croissants.py", line 52, in __send_croissants
Mar 15 10:53:37 warn python3[110192]:     file=self.__get_screenshot(message.author, message.content)
Mar 15 10:53:37 warn python3[110192]:   File "/home/warrior/actions-runner/_work/Algosup-Discord/Algosup-Discord/cogs/croissants.py", line 85, in __get_screenshot
Mar 15 10:53:37 warn python3[110192]:     img.paste(pfp, (16, 16), pfp)
Mar 15 10:53:37 warn python3[110192]:   File "/usr/local/lib/python3.9/dist-packages/PIL/Image.py", line 1557, in paste
Mar 15 10:53:37 warn python3[110192]:     self.im.paste(im, box, mask.im)
Mar 15 10:53:37 warn python3[110192]: ValueError: bad transparency mask

Environment

• Discord (web browser or app)