如何修复“TypeError：无法读取未定义的属性 'toString'” | discord.js

Question

I'm trying to make a giveaway command for my discord bot.

Everything works perfectly, except for the end part where it shows who won the giveaway. I'm trying to convert the winners array into a string so that I can send a message that shows the winner(s). I spent an entire day trying to fix this (I'm not too good at programming, to be honest) to no avail. Please help!

 message.channel.send(" **GIVEAWAY** ").then(() => { message.channel.send(Embed).then((gMessage) => { gMessage.react(""); setTimeout(function() { var peopleReacted = gMessage.reactions.cache.get("").users; var winners = []; // Checks if fewer people reacted than the the winner count allows users to win if (peopleReacted.length <= args[2]) { winners = peopleReacted; } else { // Gets as many random users from the peopleReacted as the winner count allows users to win for (var i = 0; i < args[2]; i++) { var index = Math.floor( Math.random() * peopleReacted.length ); winners.push(peopleReacted[index]); // After adding a user to winners, remove that item from the array to prevent them from winning multiple times peopleReacted.cache.array().splice(index, 1); } } var winnerMsg = "User(s) "; for (var i = 0; i < winners.length; i++) { // Add each winner to the winnerMsg winnerMsg += winners[i].toString() + ", "; } var haveHas; if (winners.length === 1) { haveHas = "has"; } else { haveHas = "have"; } message.channel.send(`${winnerMsg} ${haveHas} won ${msgArgs}`); }, time * (60 * 1000)); }); });

If it helps, all of my bot's code can be found here .

Answer 1

gMessage.reactions.cache.get("").users is probably the problem, since gMessage.reactions.cache.get("") returns a collection, it does not have an users property (= it is undefined ). If you want the reaction as an array, simply use gMessage.reactions.cache.get("").array() , this will return an array with the user objects (Note: Those are not "normal" user objects, but ReactionUserManager , you can find more on these in the docs https://discord.js.org/#/docs/main/stable/class/ReactionUserManager )