Replaced discord.BadArgument with TypeError

Author: Taaku18

CHANGELOG.md

@@ -18,6 +18,7 @@ however, insignificant breaking changes do not guarantee a major version bump, s
 - Not having a guild icon no longer raises an exception. ([PR #3235](https://github.com/kyb3r/modmail/pull/3235))
   - When no icon is set, use the default user icon.
 - Resolved an issue where `?logs` doesn't work when the thread has no title. ([PR #3201](https://github.com/kyb3r/modmail/pull/3201))
+- AttributeError raised when failing to forward a reaction. ([GH #3218](https://github.com/kyb3r/modmail/issues/3218))
 
 ### Changed
 

bot.py

@@ -876,7 +876,7 @@ async def add_reaction(
         if reaction != "disable":
             try:
                 await msg.add_reaction(reaction)
-            except (discord.HTTPException, discord.BadArgument) as e:
+            except (discord.HTTPException, TypeError) as e:
                 logger.warning("Failed to add reaction %s: %s.", reaction, e)
                 return False
         return True
@@ -1304,7 +1304,7 @@ async def handle_reaction_events(self, payload):
                     for msg in linked_messages:
                         await msg.remove_reaction(reaction, self.user)
                     await message.remove_reaction(reaction, self.user)
-                except (discord.HTTPException, discord.BadArgument) as e:
+                except (discord.HTTPException, TypeError) as e:
                     logger.warning("Failed to remove reaction: %s", e)
 
     async def handle_react_to_contact(self, payload):