Accounts.createUser({username:‘iamserver’,password:‘iamserver’,firstname:‘Server’,lastname:‘TNM’,email:‘maid@yahoo.com’},(e,r)=>{console.log(e,r)})
errorClass {isClientSafe: true, error: “username”, reason: “Accounts don"t need usernames”, details: undefined, message: “Accounts don"t need usernames [username]”, …}