Discord.js v12 - How to add a role?

Question

if (message.content == '/lv') {
    message.member.roles.add('705757268448378971');
    message.react('✅') 
}
if (message.content == '/lv remove') {
    message.member.roles.remove('705757268448378971');
    message.react('✅')
}
//TypeError: Cannot read property 'add' of undefined

Code should add role to member after '/lv' command and remove the same role after '/lv remove'. Previously worked perfectly with addRole.

Answer 1

Try to store the role in a variable.

let role = message.guild.roles.cache.get("705757268448378971");

Then you can try to add the role to the member:

if (message.content == '/lv') {
    message.member.roles.add(role);
    message.react('✅') 
}
if (message.content == '/lv remove') {
    message.member.roles.remove(role);
    message.react('✅')
}

If message.member.roles.add still doesn't work try:

message.guild.member(message.member).roles.add(role);