i'm super confused on how get_emoji works

[jetlagg3d]

so i have this code that should work from what i'm reading in the docs

import discord
client = discord.Client()

@client.event
async def on_ready():
    myguild = client.get_guild(1287453392519696538)
    mychannel = myguild.get_channel(1287453392960094248)
    mychannel.send(client.get_emoji(1220491517265842298))

client.run("NOTSHOWINGYOU")

but when it starts it always says that client.get_emoji(1220491517265842298) is a nonetype
this IS a custom emoji, and while i could use the string version, i'm trying to use get_emoji so i can access the url attribute of it, instead it always returns nonetype