Python not having function overloading

Made separate async defs for on_command_error

EnsoBot.py

@@ -292,20 +292,30 @@ async def remind_me(ctx, time=None, *, text):
         await author.send(text)
 
 
-# Bot Event for handling cooldown error/permission errors
+# Bot Event for handling missing argument error
 @client.event
-async def on_command_error(ctx, error):
+async def on_command_error(ctx, args2):
-    if isinstance(error, commands.CommandOnCooldown):
+    if isinstance(args2, commands.MissingRequiredArgument):
+        await on_command_missing_user(ctx)
+    elif isinstance(args2, commands.CommandOnCooldown):
+        await on_command_cooldown(ctx, args2)
+    elif isinstance(args2, commands.CheckFailure):
+        await on_command_permission(ctx)
+
+
+# Async def for handling cooldown error/permission errors
+async def on_command_cooldown(ctx, error):
     # Send an error message to the user telling them that the command is on cooldown
     message = await ctx.send(f'That command is on cooldown. Try again in {error.retry_after:,.2f} seconds.')
 
-        # Let the user read the message for 2.5 seconds
+    # Let the Auser read the message for 2.5 seconds
     await asyncio.sleep(2.5)
     # Delete the message
     await message.delete()
 
-    # Bot Event for handling permission errors
+
-    if isinstance(error, commands.CheckFailure):
+# Async def for handling permission errors
+async def on_command_permission(ctx):
     # Send an error message to the user saying that they don't have permission to use this command
     message = await ctx.send("Uh oh! You don't have permission to use this command!")
 
@@ -315,10 +325,7 @@ async def on_command_error(ctx, error):
     await message.delete()
 
 
-# Bot Event for handling missing argument error
+async def on_command_missing_user(ctx):
-@client.event
-async def on_command_error(ctx, target: discord.Member):
-    if isinstance(target, commands.MissingRequiredArgument):
     # Send an error message to the user saying that an argument is missing
     message = await ctx.send("Uh oh! Couldn't find anyone to mention! Try again!")