Discord py TypeError: on_member_join() missing 2 required positional arguments: 'after' and 'member' when someone joins the server

Question

I made discord bot that should give someone role upon joining but I get error which can be seen here:

Traceback (most recent call last):
  File "C:\Users\jarda\AppData\Local\Programs\Python\Python311\Lib\site-packages\discord\client.py", line 409, in _run_event
    await coro(*args, **kwargs)
          ^^^^^^^^^^^^^^^^^^^^^
TypeError: on_member_join() missing 2 required positional arguments: 'after' and 'member'

And almost full code is here:

import discord
from discord.ext import commands
from discord.utils import get
from discord.ext.commands import Bot


intents = discord.Intents.all()
client = commands.Bot(command_prefix="!", intents=intents)

@client.event
async def on_ready():
    print('We have logged in as {0.user}'.format(client))
 
@client.event
async def on_message(message):
    if message.author == client.user:
        return

@client.event
async def on_message(message):
    if message.content.startswith("AboutMe"):
        await message.channel.send("Hello world!")

@client.event 
async def on_member_join(before, after, member):
    channel=client.get_channel(channelID)
    emb=discord.Embed(title="New member has joined",description=f"Thanks {member.mention} for being part of the bros!")
    await channel.send(embed=emb)
    print(f"{member.name} has joined the server")

#Adds role

    TheGreatLegendWarriors = Bot.get_guild(serverID)
    if 'inTraining' in after.roles:
        if not 'inTraining' in str(before.roles):
            await after.add_roles(discord.utils.get(TheGreatLegendWarriors.roles, name="inTraining"))
            print(f"INFO: {after.name} Has been given inTraining role!")

Iam new to py and discord api so really unsure what the issue is. I tried using 2 on_member_join which gave me error as 2 of those can't run at the same time. Then this appeared and I have struggled for way too long now.

Answer 1

The docs specify that on_member_join should accept a single parameter, member.

You can remove the before and after parameters from your on_member_join function signature.