Callback is not a function

[PlanZed]

I am currently creating a TF2 trading bot and I want it to be able to send trade offers but i keep getting this error 

C:\Users\Valkyrie\Desktop\Trading Bot\node_modules\steamcommunity\components\users.js:491
                                callback(null, inventory, currency, body.total_inventory_count);

My main code is

client.on("friendMessage", function(steamID, message) {
	if (message == "!buy test item") {
		client.chatMessage(steamID, "Setting up the trade offer for Test Item");
		console.log("Someone typed in the command '!buy test item'");
		const offer = manager.createOffer(steamID);
		manager.loadInventory(440, 2, true, (err, inventory) => {
			if (err) {
				client.chatMessage("There was an error loading the inventory. Please try again. If the problem continues please message the owner by typing '!help'");
				console.log(err);
				console.log("There was an error loading my inventory.");
			} else {
				offer.getPartnerInventoryContents(440, 2, true, (err, inventory) => {
					if (err) {
						client.chatMessage("There was an error loading the inventory. Please try again. If the problem continues please message the owner by typing '!help'");
						console.log(err);
						console.log("There was an error loading their inventory.");
					} else {
						const offer = manager.createOffer(76561198083465811);
						inventory.forEach(function(item) {
							if (item.assetid === '30362') {
								offer.addMyItem(item);
								offer.addTheirItems(5002, 5002, 5001, 5001, 5000, 5000);
								offer.setMessage("1 Law for 2.88 Refined");
								offer.send(function(err, status) {
									if (err) {
										client.chatMessage("There was an error sending the trade offer. Please try again. If the problem continues please message the owner by typing '!help'");
										console.log(err);
										console.log("There was an error sending the trade offer.");
									} else {
										console.log(status);
										console.log("The trade was sent successfully!");
									}
								})
							}
						})
					}
				})
			}
		})
	}
})

 

[Dr. McKay]

You've cut out the actual error message.

[PlanZed]

1 hour ago, Dr. McKay said:

You've cut out the actual error message.

C:\Users\Valkyrie\Desktop\Trading Bot\node_modules\steamcommunity\components\users.js:491
                                callback(null, inventory, currency, body.total_inventory_count);
                                ^

TypeError: callback is not a function
    at SteamCommunity.<anonymous> (C:\Users\Valkyrie\Desktop\Trading Bot\node_modules\steamcommunity\components\users.js:491:5)
    at Request._callback (C:\Users\Valkyrie\Desktop\Trading Bot\node_modules\steamcommunity\components\http.js:67:15)
    at Request.self.callback (C:\Users\Valkyrie\Desktop\Trading Bot\node_modules\request\request.js:185:22)
    at Request.emit (events.js:310:20)
    at Request.<anonymous> (C:\Users\Valkyrie\Desktop\Trading Bot\node_modules\request\request.js:1154:10)
    at Request.emit (events.js:310:20)
    at Gunzip.<anonymous> (C:\Users\Valkyrie\Desktop\Trading Bot\node_modules\request\request.js:1076:12)
    at Object.onceWrapper (events.js:416:28)
    at Gunzip.emit (events.js:322:22)
    at endReadableNT (_stream_readable.js:1187:12)

[Perport]

You defined offer variable twice in your code as constant please fix that.

And  for your problem

offer.getPartnerInventoryContents(440, 2, (err, inventory,currency) => {

}

this should fix it yours has 4 inputs for some reason.

Edited May 11, 2020 by Perport

[xLeeJYx]

On 5/12/2020 at 1:52 AM, Perport said:

You defined offer variable twice in your code as constant please fix that.

And  for your problem

offer.getPartnerInventoryContents(440, 2, (err, inventory,currency) => {

}

this should fix it yours has 4 inputs for some reason.

This is a problem and another problem is you are using the same name for loading both inventories. `loadInventory` and `getPartnerInventoryContents` both are using the same callback name `inventory`. This is making the code break