Infinite Yield Warnings after Publishing Experience

[Dr_Biscottox]

Hello everyone,

I recently published my experience, but I’m getting some annoying warnings in the Errors and Warnings section of the Experience Dashboard.

During all my local testing, I never received a single warning or error, but once published, some users are reporting these warnings:

Client Warning:
Infinite yield possible on WaitForChild

CoreGui:WaitForChild("TopBarApp")  
Workspace.Farms.1.EggCapsules.1:WaitForChild("Panel")  
Workspace.Farms.2.EggCapsules.1.Panel:WaitForChild("Attachment")  
Workspace.Farms.2.EggCapsules.7:WaitForChild("Panel")  
Workspace.Farms.3.EggCapsules.1:WaitForChild("Panel")  
Workspace.Farms.3.EggCapsules.4:WaitForChild("Panel")  
Workspace.GemSpawnerPanel:WaitForChild("Panel")  

Regarding CoreGui:WaitForChild(“TopBarApp”), I believe this might be a Roblox bug, but I don’t know how to avoid or fix it.

For the other warnings, the objects are essential to the gameplay (which is why I use WaitForChild) and they are always present in the Workspace from the start. So I don’t really understand why WaitForChild would fail or give an infinite yield warning.

Has anyone else experienced something like this?

Do you know how I can solve these warnings? They could make the experience unplayable for the affected players.

Thanks a lot!

[MRX_perte (Programmer)]

What your seeing is actually pretty common especially after publishing, even if everything works perfectly in Studio. The “Infinite yield possible on WaitForChild” warning happens when WaitForChild times out because the object dosent exist yet at the exact moment the client is running the code. This dosent always mean something is broken…

It often just reflects timing differences between Studio and live servers!

Instead of :WaitForChild("Panel"), use something like :WaitForChild("Panel", 5)

This prevents infinite yields and gives you control over how long the client waits.

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ALSO make sure the objects are replicating properly to the client. Sometimes objects under Workspace or other containers may take a short moment to appear on the client after joining!!

As for CoreGui:WaitForChild("TopBarApp") that one is usually safe to ignore. CoreGui elements can behave differently across devices and Roblox sometimes triggers warnings even if nothing actually fails.

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Adding timeouts and small delays can make your scripts cleaner and prevent these warnings from showing up!

Hope this helped in anyway!

[ethamcker (ethamck)]

@Dr_Biscottox

Regarding CoreGui:WaitForChild(“TopBarApp”), I believe this might be a Roblox bug, but I don’t know how to avoid or fix it.

If CoreGui is really CoreGui, why are you waiting for anything in it? Yes, just a Roblox bug. (I thought this code was all adjacent in one of your scripts.) Nothing you can do to fix it. Warnings aren’t errors, anyway.

More importantly, if those objects are already in the workspace, and your local script is somewhere in a Starter* container, it should be safe to remove the WaitForChilds entirely. You don’t need them unless the server adds Panel after the player joins, and if you didn’t script that, then it doesn’t.

[NyrionDev (Nyrion)]

@Dr_Biscottox

Regarding CoreGui:WaitForChild(“TopBarApp”), I believe this might be a Roblox bug, but I don’t know how to avoid or fix it.

The CoreGui isn’t accessible from normal Roblox scripts. This is probably why you get this warning.

[TheGrimDeathZombie (Reapimus)]

It’s actually because Roblox’s error logging analytics in the creator hub will also include errors and warnings from CoreScripts and in general engine-level errors/warnings.

Ability to Filter Engine Warns and Errors in ErrorReport

A constant struggle with the error analytics is that a proportionally large amount of the results are just roblox engine specific errors of which we have zero control over. These warns/errors serve no value to Devs as they cannot fix them, and it’s not like we can just forward them all to staff anyways. As a Dev, it would be incredibly useful if we could hide these errors/warns all together so we can focus on the actual ones relating to our game instead of having to constantly scroll past react…

[Gamemaster712Z]

To fix the errors, just do “WaitForChild(childname,5)”

It should wait 5 seconds, then stop looking. I’m pretty sure this will remove the errors, but won’t fix the problem of the items not being found

[TheGrimDeathZombie (Reapimus)]

@Gamemaster712Z

but won’t fix the problem of the items not being found

I don’t think these items are not being found. The infinite yield warning is emitted purely when WaitForChild takes a bit too long to find an instance matching the query and a timeout has not been explicitly defined.

[averlst (aver)]

If you have instance streaming enabled, you’ll need to build your client code around it. Rather than wait for non-persistent instances, write your code to listen to events and run when they exist.

If your instances are persistent or you have streaming disabled, you can safely ignore those warnings, however you may want to look into optimizing as it may indicate bandwidth saturation.
As you mention the objects are essential, do not add a timeout, it’ll just complicate and may break things unexpectedly.