Discord.js TypeError: Cannot read property 'setActivity' of null

Question

How can I fix this? I'm getting an error like TypeError: Cannot read property 'setActivity' of null .

client.on('ready', message  => {
  client.user.setActivity("21"+`${client.guilds.size} servers have members`+" "+"5"+`${client.users.size}`+` | !help `, { type: 'WATCHING' })
  console.log("21"+`${client.guilds.size} servers have members `+" "+"5"+`${client.users.size}`) 
});

Answer 1

Make sure that the Client is logged in. That is the only way I could think those properties would be null.

Answer 2

I found how to fix i'm use new TOKEN(New bot)