OOP Module : "Attempt to index nil with function"

[spookwallyjungle]

Hi, so i did a Super bomb survival game today, but i ran into a problem, when i am trying to do the bomb spawning logic, this error appears

ServerScriptService.MainRound:327: attempt to index nil with ‘GetBombTag’ - Server - MainRound:327
17:54:08.376 Stack Begin - Studio
17:54:08.377 Script ‘ServerScriptService.MainRound’, Line 327 - Studio - MainRound:327
17:54:08.377 Stack End - Studio

This is the part where the spawning is

local PS = game:GetService("Players")
local SV = game:GetService("ServerStorage")
local ReplicatedStorage = game:GetService("ReplicatedStorage")
local SetAtt = ReplicatedStorage:WaitForChild("SetAttribute")
local visualsr = ReplicatedStorage:WaitForChild("VisualsRemote")
local soundsw = workspace:WaitForChild("Sounds")
local soundsingame = soundsw:WaitForChild("In-Game")
local gamemodules = ReplicatedStorage:WaitForChild("GameModules")
local bombSpawner = gamemodules:WaitForChild("BombSpawner")
local bombfunctions = bombSpawner:WaitForChild("AssignBombFunction")
local BombTypesFolder = bombfunctions:WaitForChild("BombTypes")

spawnBombsLoop = coroutine.create(function()
			while true do

				task.wait(Seed:NextNumber(1, 10)*Seed:NextInteger(1, 1.5)/currentIntensity.Value + 1.35)

				local getbombsmodels = bombsfolderworks:GetChildren()
				local amountofmodels = #getbombsmodels
				if gamestarted.Value then
					if amountofmodels <= 15 then
						local x = newbombspawner.Position.X
						local z = newbombspawner.Position.Z

						local xS = newbombspawner.Size.X/2
						local zS = newbombspawner.Size.Z/2

						local pos1 = math.random(x-xS, x+xS)
						local pos2 = math.random(z-zS,z+zS)

						local rayOrigin = Vector3.new(pos1, newbombspawner.Position.Y, pos2)
						local rayDirection = Vector3.new(0, -500, 0)

						local raycasParams = RaycastParams.new()
						raycasParams.FilterType = Enum.RaycastFilterType.Exclude
						raycasParams.FilterDescendantsInstances = {newbombspawner}

						local raycastResult = workspace:Raycast(rayOrigin, rayDirection, raycasParams)

						if raycastResult then
							local randomSelect = SearchIn(bombModels, "", true)
							if randomSelect then
								if randomSelect:FindFirstChild("Model") then
									local ModelFolder = randomSelect:WaitForChild("Model")
									if ModelFolder then
										for _, models in pairs(ModelFolder:GetChildren()) do -- here i do the bomb spawning
											if models:IsA("Model") then
												local cloneBombModel = models:Clone()
												cloneBombModel.Parent = bombsfolderworks
												cloneBombModel:PivotTo(CFrame.new(raycastResult.Position + Vector3.new(0, Seed:NextNumber(50, 75), 0)))

												local bombfunctions = requirebombFunctions.createbombAndAssignFunction(cloneBombModel) -- doing that
												local bombModule = bombfunctions:GetBombModule()
												local GetBombTagd = bombFunctions:GetBombTag()
												if bombModule then
													if GetBombTagd then
														bombModule.new(cloneBombModel, GetBombTagd)
													end
												end
												
											--	table.insert(activeBombs, bombfunctions)

													
											end
										end
									end
								end
							end
						end
					else

					end
				else
					CleanBombs()
				end

And the assign bomb functions oop module :

--ndya!!!!
local system = {}
system.__index = system

local collectionService = game:GetService("CollectionService")
local BombTypesFolder = script:WaitForChild("BombTypes")





function system:GetBombModule()
	print(self)
	return self.bombmodule -- and here it doesn't works either
end

function system:GetBombTag()
		
	return self.bombtagfound -- i guess here it errors?

end


function system.createbombAndAssignFunction(bomb : model | Part | MeshPart)
	assert(bomb,"Argument 'bomb' is missing")

	local self = setmetatable({}, system)

	self.bombmodel = bomb
	self.bombmodule = nil
	self.bombtagfound = nil

	

	local tags = collectionService:GetTags(self.bombmodel)
	for _, tag in pairs(tags) do
		if tag then
			
			self.bombtagfound = tag

			local get = system:getBombModule(tag, self.bombmodel)
			if get then
				local requirem = require(get)
				self.bombmodule = requirem
				--requirem.new(self.bombmodel, tag)
				print("Module for " .. self.bombmodel.Name or self.bombmodel:GetFullName().." Required Succesfully")
			else
				warn("Couldn't Find a Module for .. "..self.bombmodel.Name or self.bombmodel:GetFullName())
			end

			--local customFunction = tagFunctions[tag]
			--if customFunction then
			--customFunction(self.bombmodel)
			--end
		else
			return warn("Couldn't Find a Tag for .. "..self.bombmodel.Name or self.bombmodel:GetFullName())		
		end
	end


	return self
end

function system:assignFunction()
	
	--local tagFunctions = {
	--	classicBomb = function(object)

	-- descartado Muejejee!!

	--end,
	--}
	
	print("Loading")
	
	local tags = collectionService:GetTags(self.bombmodel)
	for _, tag in pairs(tags) do
		if tag then
			local get = system:getBombModule(tag, self.bombmodel)
			if get then
				local requirem = require(get)
				self.bombmodule = requirem
				requirem.new(self.bombmodel, tag)
				print("Module for " .. self.bombmodel.Name or self.bombmodel:GetFullName().." Required Succesfully")
			else
				warn("Couldn't Find a Module for .. "..self.bombmodel.Name or self.bombmodel:GetFullName())
			end

			--local customFunction = tagFunctions[tag]
			--if customFunction then
			--customFunction(self.bombmodel)
			--end
		else
			return warn("Couldn't Find a Tag for .. "..self.bombmodel.Name or self.bombmodel:GetFullName())		
		end
	end
end

function system:getBombModule(tagname : string, object)
	for _, modules in pairs(BombTypesFolder:GetChildren()) do
		if modules:IsA("ModuleScript") then
			if modules.Name == tagname then
				return modules
			end
		end
	end
	return nil
end


return system

If someone knows what’s wrong, please tell me!