Discord.js: UnhandledPromiseRejectionWarning on guildMemberUpdate Event

[IncorrectFadixer]

(node:33392) UnhandledPromiseRejectionWarning: Error: Adding the role timed out. at timeout.client.setTimeout (C:\Users\alexa\Desktop\Skrivbord\Discordbot\node_modules\discord.js\src\client\rest\RESTMethods.js:550:16) at Timeout.setTimeout [as _onTimeout] (C:\Users\alexa\Desktop\Skrivbord\Discordbot\node_modules\discord.js\src\client\Client.js:434:7) at ontimeout (timers.js:436:11) at tryOnTimeout (timers.js:300:5) at listOnTimeout (timers.js:263:5) at Timer.processTimers (timers.js:223:10) (node:33392) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 12)
CONSOLE ERROR: ^

`bot.on('guildMemberUpdate', (oldMember, newMember) => {

var roleMember = '549696099712237602';
var roleMuted = '555328360172093453';
var categoryRolesNoob = '578655959291920387'; //
var colorizeRolesNoob = '578656540261875712'; //

if (newMemberRoles.get(roleMember)
|| newMemberRoles.get(roleMuted)) {
if (!newMemberRoles.get(categoryRolesNoob)) {
newMember.addRole(categoryRolesNoob);
} if (!newMemberRoles.get(colorizeRolesNoob)) {
newMember.addRole(colorizeRolesNoob);
}
} if (!newMemberRoles.get(roleMember)
&& !newMemberRoles.get(roleMuted)) {
if (newMemberRoles.get(categoryRolesNoob)) {
newMember.removeRole(categoryRolesNoob);
} if (newMemberRoles.get(colorizeRolesNoob)) {
newMember.removeRole(colorizeRolesNoob);
} if (!newMemberRoles.get(roleMember)) {
newMember.addRole(roleMember);
}
}
}`
CODE: ^

CODE-FUNCTION: Well, the code function is if a user has roleMember it is going to add categoryRoleNoob and colorizeRoleNoob, if user doesnt have roleMember it is going to remove the other 2 roles. But if roleMember is removed it will re-add roleMember. That works fine.

PROBLEM: The error spam. Is there a way to possibly prevent my bot from sending errors?

PS: Ik the code is probably not well written.

[didinele]

and uh.. what exactly happened with this

Please describe the problem you are having in as much detail as possible:

Include a reproducible code sample here, if possible:

// Place your code here

Further details:

• discord.js version:
• Node.js version:
• Operating system:
• Priority this issue should have – please be realistic and elaborate if possible:

• [ ] I have also tested the issue on latest master, commit hash:

[monbrey]

This doesn't belong in GitHub issues. You're being rate limited because you're modifying roles too often.

Bad functionality design is all this is