Fortnite command just won't work ;-;

[AsrieltheGoat]

**PS C:\Users\AsrieltheGoat\Desktop\bot> node index.js
.---------------------------.

Commands
Command
-------------
fortnite.js
hmm.js
love.js
meme.js
rps.js
help.js
info.js
ping.js
whois.js
ban.js
clear.js
kick.js
report.js
say.js
'---------------------------'
Hi, A********* is now online!
(node:6532) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'toLowerCase' of undefined

at Object.run (C:\Users\AsrieltheGoat\Desktop\bot\commands\experiment\fortnite.js:19:21)
at Client.<anonymous> (C:\Users\AsrieltheGoat\Desktop\bot\index.js:51:17)
at Client.emit (events.js:210:5)
at MessageCreateHandler.handle (C:\Users\AsrieltheGoat\Desktop\bot\node_modules\discord.js\src\client\websocket\packets\handlers\MessageCreate.js:9:34)
at WebSocketPacketManager.handle (C:\Users\AsrieltheGoat\Desktop\bot\node_modules\discord.js\src\client\websocket\packets\WebSocketPacketManager.js:105:65)
at WebSocketConnection.onPacket (C:\Users\AsrieltheGoat\Desktop\bot\node_modules\discord.js\src\client\websocket\WebSocketConnection.js:333:35)
at WebSocketConnection.onMessage (C:\Users\AsrieltheGoat\Desktop\bot\node_modules\discord.js\src\client\websocket\WebSocketConnection.js:296:17)
at WebSocket.onMessage (C:\Users\AsrieltheGoat\Desktop\bot\node_modules\ws\lib\event-target.js:120:16)
at WebSocket.emit (events.js:210:5)
at Receiver.receiverOnMessage (C:\Users\AsrieltheGoat\Desktop\bot\node_modules\ws\lib\websocket.js:789:20)

(node:6532) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1)
(node:6532) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.**

Here the error message
I think there is something wrong with ur code ;-;
I spend a day to troubleshooting ur code but nothing change ;-;

[zientix]

Are u typing only the command or command with an argument