Attempt to index nil with 'WaitForChild' [For Plugin]

Hey, I am scripting a plugin that features GUI, and when I want to define each frame. Every time I try to do that though, it doesn’t work. Here is the script:

I don’t know if I should just define the variables manually every single time, but if I have to I will.

On which line do you get this error exactly? We’d need a bit more info

WaitForChild returns nil when a timeout is set, and the set amount of time has passed. Just ignore the timeout parameter, it’s optional.

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Sorry about that, line 11

char

Yes but when I do that it just says attmept to index nil with (the thing I’m trying to get)

Again, WaitForChild returns nil when you set a timeout and the script has waited enough time. If 10 seconds passed, the variable gui is just nil, non-existent, even if the object itself has been added 10 seconds after. Thus, running gui:WaitForChild() or other functions means nil:WaitForChild(), causing the error you mentioned.

Just do local gui = script:WaitForChild("mainGui") without the timeout.

Infinite yield possible on 'user_plugincode.lua.Script:WaitForChild("mainGui")'  -  Studio

Now this error is showing

This is expected behavior. You don’t have mainGui under your script.

Then how am I supposed to make the GUI show up? lets just continue in dms

Oh, you saved as .lua I think. That’s a script file, not a Roblox model file. Try .rbxm.

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also I do have mainGui under the script

would i just have to publish it and it is still saying infinite yield on mainGui

The .rbxm option can be found by saving it as a local plugin. If you want to publish, maybe try grouping it first.

I wish it showed as an option but it isn’t.


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There’s the Save as type dropdown menu. Click that, select .rbxm. Merely adding the extension name won’t work unless you have “All types” selected.

When I press the dropdown it does not show “all files” or “.rbxm” I can try doing it manually but I don’t know why its doing this

Hmm, that’s weird. Group (Ctrl+G) the script, save again, and see what happens.

It isn’t showing the option to save as local plugin for a group (it’s faded)

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this is what happened when i tried manually doing it

How did you group your script? The test model I have is valid:

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Ok I’ll try that (should I do that with the GUI?)