I have an issue (not a bug, just need some help)

[marisklava]

I am still fairly new to javascript and it's basics, but i still wanted to try my hand at building a discord bot, when i tried to make a simple ban command i ran into an issue.
See, every time i try to run it i run into some errors like these:
(node:1104) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): Error: B ad Request (node:1104) DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise r ejections that are not handled will terminate the Node.js process with a non-zero exit code. (node:1104) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 3): TypeErro r: Cannot read property 'username' of undefined

This is my code:

const discord = require('discord.js');
const commando = require('discord.js-commando');
class BanCommand extends commando.Command {

constructor(client) {
    super(client, {

name: 'ban',
group: 'random',
memberName: 'ban',
description: 'bans a user',

args: [
{
key: 'member',
label: 'member',
prompt: 'What user would you like to ban?',
type: 'member'
}
]
});
}
async run(message, args) {
msg.channel.permissionsFor(client.member).isOwner(user);
msg.channel.guild.banMember(member.id, deleteDays);
}
}
module.exports = BanCommand;

thx for helping, i know this is dumb, but please help anyways, since i am a noob.

[devsnek]

https://github.com/gawdl3y/discord.js-commando