Contact no longer raises an error when contacting a bot, now an error message is sent

Author: Taaku18

cogs/modmail.py

@@ -603,6 +603,13 @@ async def contact(self, ctx,
                       user: Union[discord.Member, discord.User]):
         """Create a thread with a specified member."""
 
+        if user.bot:
+            embed = discord.Embed(
+                color=discord.Color.red(),
+                description='Cannot start a thread with a bot.'
+            )
+            return await ctx.send(embed=embed)
+
         exists = await self.bot.threads.find(recipient=user)
         if exists:
             embed = discord.Embed(
@@ -621,7 +628,7 @@ async def contact(self, ctx,
                 color=self.bot.main_color
             )
 
-        return await ctx.send(embed=embed)
+        await ctx.send(embed=embed)
 
     @commands.command()
     @trigger_typing