TypeError: Cannot read property 'add' of undefined discord.js

问题

So i have a discord bot, and i have been forking some code and basically experminting. my synax is right however it says TypeError: Cannot read property 'add' of undefined when i try to make my discord.js bot add a role.

client.guilds.get(config.guild).member(message.author).role.add(config.role) // ensure this is a string in the config ("")
        .then(console.log(`TOKEN: ${message.author.token} :: Role ${config.role} added to member ${message.author.id}`))
        .catch(console.error)
})

Could someone please explain how to fix this as i am still noobish at this.

回答1:

Found out what was wrong, the Role ID Was invalid for some reason, Doing \@role did the trick.

来源：https://stackoverflow.com/questions/53368797/typeerror-cannot-read-property-add-of-undefined-discord-js