TypeError: Cannot read properties of undefined (reading 'send')

with settings.channel being a channel ID

const channel = client.channels.cache.get(settings.channel)
channel.send("e")

const channel = client.channels.cache.get(settings.channel)
channel.send("e")

const channel = client.channels.cache.get(settings.channel)
channel.send("e")

const channel = client.channels.cache.get(settings.channel)
channel.send("e")