Merge pull request #1885 from python-discord/fix-files-being-sent-in-webhooks

Use MISSING sentinal rather than None for no files

Author: mbaruh

bot/exts/moderation/incidents.py

@@ -105,7 +105,7 @@ async def make_embed(incident: discord.Message, outcome: Signal, actioned_by: di
         else:
             embed.set_author(name="[Failed to relay attachment]", url=attachment.proxy_url)  # Embed links the file
     else:
-        file = None
+        file = discord.utils.MISSING
 
     return embed, file