Invalid argument #1 to 'pairs' (table expected, got nil)

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#21

I’ll see if that works when I get on my computer in the morning.

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#22

Okay, the error on line 57 is in the initProps function, which has:

for _, Prop in pairs(Properties[obj.ClassName]) do

The full spot there can be found in the initProps function.
I will list all the functions for saving, which are are a few (3).

The Save.Encrypt() function:

function module.Encrypt(objs)
	return HttpService:JSONEncode(InitProps(objs))
end

Then, the initProps function:

function InitProps(objects)
	local tableToSave = {}
	for _, obj in pairs(objects) do
		local class = obj.ClassName
		local t = tableToSave[class]
		if not(t) then
			tableToSave[class] = {}
			t = tableToSave[class]
		end
		local add = {}
		for _, Prop in pairs(Properties[obj.ClassName]) do -- this is the line that makes the error
			add[Prop] = Serialize(obj[Prop])
		end
		local children = obj:GetChildren()
		if #children > 0 then
			add["Children"] = InitProps(children)
		end
		table.insert(t, add)
	end
	return tableToSave
end

Then, the serialize function:

function Serialize(prop)
	local typ = typeof(prop)
	local r 
	if typ == "BrickColor" then
		r = tostring(prop)
	elseif typ == "CFrame" then
		r = {pos = Serialize(prop.Position), rX = Serialize(prop.rightVector), rY = Serialize(prop.upVector), rZ = Serialize(-prop.lookVector)}
	elseif typ == "Vector3" then
		r = {X = prop.X, Y = prop.Y, Z = prop.Z}
	elseif typ == "Color3" then
		r = {Color3.toHSV(prop)}
	elseif typ == "EnumItem" then
		r = {string.split(tostring(prop), ".")[2], string.split(tostring(prop), ".")[3]}
	else
		r = prop
	end
	return r
end

Also, the error is:
“error generating data: ServerScriptService.Serializer:57: invalid argument #1 to ‘pairs’ (table expected, got nil) for slot Slot1 for plr GalacticLemon_Aj”.

#23

That didn’t seem to help. I do know that the blocks exist, because when it prints the block’s name when it goes in the loop.

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#24

The error is saying that you’re passing nil to the pairs function, meaning that Properties[obj.ClassName] is nil. In other words, there’s no key in the Properties table that matches obj's ClassName.

Try putting a print statement before the for loop to see what class isn’t included within the Properties table.

print(obj.ClassName, Properties[obj.ClassName])
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#25

When I use that, it prints with:

Part ▼ {
[1] = “Name”,
[2] = “Position”,
[3] = “Size”,
[4] = “Transparency”,
[5] = “BrickColor”,
[6] = “CanCollide”,
[7] = “CFrame”,
[8] = “Anchored”,
[9] = “Shape”,
[10] = “Material”
}

StringValue nil - this and the message above are both from line 56, the print you suggested to add.

error generating data: ServerScriptService.Serializer:58: invalid argument #1 to 'pairs' (table expected, got nil) for slot Slot1 for plr GalacticLemon_Aj

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