Troubles with Heroku hosting (discord bot)

Question

Heroku is not letting me start the application as it stays on for a few seconds, and then this happens:

2020-04-07T23:11:35.586817+00:00 heroku[web.1]: State changed from starting to crashed
2020-04-07T23:11:35.597942+00:00 heroku[web.1]: State changed from crashed to starting

After that, Heroku restarts the application, and the above code is displayed one more time (this time there is no restart, just a crash).

2020-04-07T23:12:38.593514+00:00 heroku[web.1]: State changed from starting to crashed

I've searched for problems in my code, and I could not found any, so I deleted everything, and make my main file core.js a single discord bot, that just send an embed message with a title:

const { Client, MessageEmbed } = require('discord.js')
const client = new Client()
let channel = null

client.on('ready', () => {
  console.log(`bot ${client.user.tag} running`)
  channel = client.channels.cache.find(ch => /generic_channel_name/.test(ch.name))

  const embed = new MessageEmbed()
    .setTitle('Commom title')
    .setColor('#ffff00');
    channel.send(embed)
})

client.login(config.token)

Even a single setInterval causes the Heroku to crash the app:

setInterval(() => {
  console.log('Testing')
}, 3000)

I really tried lots of things, but the only thing I did that didn't crash was a simple for loop from 0 to 100.000

Can someone help me?

FanBoy9344 FanBoy9344 · Accepted Answer · 2020-04-08T14:52:59

There are a lot of reasons why it could happen, The most common ones are :

1. You do not have a Procfile.
Solution for this: make a Procfile which just says `worker node core.js` or `worker node .`.
2. You do not have enabled node dyno from the Heroku site.
Solution for this: Head to Dynos and enable node.
3. You have not updated your package.json.
Solution for this: Head to console/terminal and then say `npm init` and fill whatever it asks you to fill, Make sure that dependencies are properly aligned.

Sorry if this fails to help you.

Troubles with Heroku hosting (discord bot)

3 Answers