debug output

Debugger attached.
Debugger attached.
attempting to load command help
attempting to load command kick
attempting to load command modhelp
attempting to load command ping
attempting to load command prune
Waiting for the debugger to disconnect...
/home/taigo/Documents/MIKU!!!/commands/kick.js:18
        message.guild.members.cache.find((member) => member.userName.toUpperCase() === args[0].toUpperCase()) ||
                                                                     ^

TypeError: Cannot read property 'toUpperCase' of undefined
    at /home/taigo/Documents/MIKU!!!/commands/kick.js:18:70
    at Map.find (/home/taigo/Documents/MIKU!!!/node_modules/@discordjs/collection/dist/index.js:161:17)
    at Object.exports.run (/home/taigo/Documents/MIKU!!!/commands/kick.js:18:37)
    at module.exports (/home/taigo/Documents/MIKU!!!/events/message.js:21:9)
    at Client.emit (events.js:315:20)
    at MessageCreateAction.handle (/home/taigo/Documents/MIKU!!!/node_modules/discord.js/src/client/actions/MessageCreate.js:31:14)
    at Object.module.exports [as MESSAGE_CREATE] (/home/taigo/Documents/MIKU!!!/node_modules/discord.js/src/client/websocket/handlers/MESSAGE_CREATE.js:4:32)
    at WebSocketManager.handlePacket (/home/taigo/Documents/MIKU!!!/node_modules/discord.js/src/client/websocket/WebSocketManager.js:384:31)
    at WebSocketShard.onPacket (/home/taigo/Documents/MIKU!!!/node_modules/discord.js/src/client/websocket/WebSocketShard.js:444:22)
    at WebSocketShard.onMessage (/home/taigo/Documents/MIKU!!!/node_modules/discord.js/src/client/websocket/WebSocketShard.js:301:10)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] start: `node bot.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/taigo/.npm/_logs/2021-03-21T17_15_33_157Z-debug.log
Waiting for the debugger to disconnect...