Roblox Studio New Luau Solver having trouble with existant item in WaitForChild objects

Bug Reports Studio Bugs
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#21

What arguments does your CreateFolders functions take in?

#22 
-- Create Folders of cars 
local function CreateFolders(cardata,player:Player)
	local OwnedCarsFolder = player:FindFirstChild("OwnedCars")

	if not OwnedCarsFolder then
		OwnedCarsFolder = Instance.new("Folder",player)
	end

	OwnedCarsFolder.Name = "OwnedCars"

	for i,v in cardata do
		local CarDataFolder = Instance.new("Folder",OwnedCarsFolder)

		CarDataFolder.Name = tostring(i)

		if v.Limited and v.Limited == true then
			local LimitedSerial = Instance.new("NumberValue",CarDataFolder)
			LimitedSerial.Value = v.SerialValue
			LimitedSerial.Name = "Serial"
		end

		if v.Offsale and  v.Offsale == true then
			local OffSale = Instance.new("BoolValue",CarDataFolder)
			OffSale.Value = true
			OffSale.Name = "OffSale"
		end
		
		if v.Price then
			local Price = Instance.new("NumberValue",CarDataFolder)
			Price.Value = v.Price
			Price.Name = "Price"
		end
	end
end
#23

Running my code in game return no error or warning only the luau solver shows warning

#24

what does it say if you hover over the data

#25

Also sorry but this is clearly an issue look:
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#26

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#27

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#28

Oh, that makes sense, it just tries to use the non existing variables in the dictionary inside the function.
Your dictionary has only the {Offsale = true} key, but nothing to do with Limited, SerialValue and so on.

#29

Same story as :WaitForChild()
Cant use methods on the objects that might be nil
For example
if you use game.Players.LocalPlayer on the server it will return nil, because there is no such thing as LocalPlayer on server, but if you do that on client it will return your player instance.
If you want to get rid of that warning, use type declaration or type casting, like i showed you with RemoteEvents

#30

Also i got a warning for this too:

image
image1797×411 84.7 KB

image
image

#31

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image825×268 17.1 KB

you dont have to specify the type of the ReplicatedStorage
Luau thinks that you are using it as class/type, but not as the actual game object that is used in the Explorer

#32

image
Oh also, take the note.
Never do that to deal with exploiters, it takes them nothing to create a new account and figure out whats a problem, instead delay their punishment by a week or more, so they will remain clueless why that happened.

#33

oh also, in case you wondered.
--!strict doesnt magically optimize your code, it just forces you to follow declarative programming paradigm, just like C++ or Rust.