(node:2072) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'send' of undefined Discord js | Mongoose | MongoDB - mongodb

Question

I am trying to make a simple welcome message on discord js with an event handler. It would work if I do it on the main file, but it does not work when I try it here. Code Below:
const profileModel = require('../../database/models/profileSchema');
let WelcomeSchema = require(`../../database/models/welcomeSchema`)
const Discord = require(`discord.js`)
const mongoose = require(`mongoose`)
module.exports = (client, member, GuildMember) => {
WelcomeSchema.findOne({ guildID: member.guild.id}, async (err, data, user) => {
console.log(member.guild.id)
if(!data) return;
const channel = await client.channels.cache.find(x => x.id === `${data.WelcomeChannel}`)
channel.send(`Welcome ${member}, ${data.WelcomeMsg}`)
})
}
Below Is My Event Handler (keep in mind the code above had the file name of, guildMemberAdd)
fs.readdirSync(`./events`).forEach(dirs => {
const events = fs.readdirSync(`./events/${dirs}`).filter(file => file.endsWith(`.js`))
for (const file of events) {
console.log(`Loading discord.js event ${file}`);
const event = require(`./events/${dirs}/${file}`);
client.on(file.split(".")[0], event.bind(null, client));
}
});
Below Is The Full Error
(node:2072) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'send' of undefined
at E:\Software\Github Repository shit\EA-BOT\events\Other\guildMemberAdd.js:15:13
at processTicksAndRejections (internal/process/task_queues.js:93:5)
(node:2072) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:2072) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
Below Is Line 15 (where the error was at)
(line 14) const channel = await client.channels.cache.find(x => x.id === `${data.WelcomeChannel}`)
(line 15) channel.send(`Welcome ${member}, ${data.WelcomeMsg}`)

Answer 1

The error is self-explanatory. Cannot read property 'send' of undefined you are attempting to invoke .send() method of something undefined - meaning channel is undefined. If we take a look at line 14, the logical explanation is that there is no channel, for which
x.id === `${data.WelcomeChannel}`
is true.
The line if (!data) return; for your purposes is not specific enough. It appears data exists, but either data.WelcomeChannel does not, or IDs don't much.
Try to use line if (!data.WelcomeChannel) return; and see if this exits your code. Then double-check data.WelcomeChannel is a correct channel id (and if it's actually an id, not channel object).

Answer 2

Instead of using this:
const channel = await client.channels.cache.find(x => x.id === `${data.WelcomeChannel}`)
to get your Discord.channel, try doing this:
const channel = await client.channels.cache.get(data.WelcomeChannel)
Note: I can't test the fix myself because I'm currently in school, but this may fix your issue.