Discord.py on_member_join not working, no error message

I am trying to make a discord bot with the Discord.py library. The commands with the @client.command() decorator work fine for me, but none of the event ones that I tried work.

@client.event
async def on_member_join(member):
    channel = client.get_channel(ChannelId) #I did define channel Id in my code
    await channel.send("someone has joined")

@client.event
async def on_member_remove(member):
    print("Someone has left")

I would expect this to output to the terminal or in the channel id I put in, but nothing appears, not even an error message.

*I used client. for all functions. *I am doing this on mac.

Im not quite sure why its working, I do not get any error messages, and I cant seem to find anyone else with this problem.

Thanks in advance

Answer

With version >1.5.0 you can do something like this:

import discord

intents = discord.Intents.default()
intents.members = True

client = discord.Client(intents=intents)

@client.event
async def on_member_join(member):
    await member.send("Welcome!")

You also need to enable intents in the developer portal in https://discord.com/developers/applications. Bot > Bot > Presence & Server Members Intents > Toggle On