Edited:attempt to index local 'plr' (a nil value) in server mode?

I cannot fix this: on line 89 below (marked) I get a nil value for plr error in Servermode

Could someone help me fix this error ? I have tried everything I can think of

Also, my Player 1 does not load the skin and gamepasses do not work in server mode or the game but I thought I would start by fixing this error.

local function Sep(table,plr)
	for i,v in pairs(table, game.Players:GetPlayers()) do--me -removes stop working error after fixing clientside no Character, serverside no plr
			plr = game:GetService('Players').LocalPlayer--me -removes plr a nil value error serverside
	
		local char = plr.Character or plr.CharacterAdded:Wait()--me -removes Character a nil value error clientside
		if type(v)=="userdata" then
			v:Clone().Parent = plr.Backpack
		elseif type(v)=="number" then
			game.ServerStorage.PlayerMoney:FindFirstChild(plr.Name).Value = game.ServerStorage.PlayerMoney:FindFirstChild(plr.Name).Value + (v)
		else
			if v:sub(0,2) == "W:" then
				plr.Character.Humanoid.WalkSpeed = plr.Character.Humanoid.WalkSpeed + tonumber(v:sub(3))
			else
				--plr.Character.Humanoid.MaxHealth = v + 50
				--plr.Character.Humanoid.Health = v
				plr.Character.Humanoid.MaxHealth = plr.Character.Humanoid.MaxHealth + tonumber(v:sub(3))
				plr.Character.Humanoid.Health = plr.Character.Humanoid.Health
			end
		end
	end
end

local function SepQ(table,plr)
	for i,v in pairs(table, game.Players:GetPlayers()) do--me -removes stop working error after fixing clientside no Character, serverside no plr
		plr = game:GetService('Players'):GetPlayers()--me -removes plr a nil value error serverside
		local char = plr.Character or plr.CharacterAdded:Wait()--me -removes Character a nil value error clientside
		--local plr = game:GetService('Players'):GetPlayers()--me -removes plr a nil value error serverside
		if type(v)=="userdata" then
			v:Clone().Parent = plr.Backpack
		elseif type(v)=="number" then
			return
		else
			if v:sub(0,2) == "W:" then
				plr.Character.Humanoid.WalkSpeed = plr.Character.Humanoid.WalkSpeed + tonumber(v:sub(3))
			else
				plr.Character.Humanoid.MaxHealth = plr.Character.Humanoid.MaxHealth + tonumber(v:sub(3))
				plr.Character.Humanoid.Health = plr.Character.Humanoid.Health
			end
		end
	end
end

MarketplaceService.ProcessReceipt = function(receiptInfo)
	print(receiptInfo.ProductId)
	if Items[receiptInfo.ProductId] then
		if type(GetName(receiptInfo.PlayerId)) == "string" then
			wait()
			local p5 = game.Players:FindFirstChild(GetName(receiptInfo.PlayerId))
			wait()
			Sep(Items[receiptInfo.ProductId],p5)
		end
	end
	return Enum.ProductPurchaseDecision.PurchaseGranted		
end

game.Players.PlayerAdded:connect(function(p)
	if p~=nil then
		for i,v in pairs(Gamepasses) do
			if MarketplaceService:PlayerOwnsAsset(p,i) then
				Sep(v,p)
			end
		end
		wait(0.5)
		p.CharacterAdded:connect(function(p)--me changed c to p
			for i,v in pairs(Gamepasses) do
				if MarketplaceService:PlayerOwnsAsset(p,i) then
					SepQ(v,p)
				end
			end
		end)
	end
end)

UPDATE edit:

So, I can fix the errors with this code but then my Gamepass only works locally and breaks in the server:

local function Sep(table,plr)
	for i,v in pairs(table, game.Players:GetPlayers()) do--me -removes stop working error after fixing clientside no Character, serverside no plr

		
		repeat wait() until game.Players.LocalPlayer and game.Players.LocalPlayer.Character		
		local char = plr.Character or plr.CharacterAdded:Wait()--me -removes Character a nil value error clientside
		plr = game.Players:GetPlayerFromCharacter(char)
		if type(v)=="userdata" then
			v:Clone().Parent = plr.Backpack
		elseif type(v)=="number" then
			game.ServerStorage.PlayerMoney:FindFirstChild(plr.Name).Value = game.ServerStorage.PlayerMoney:FindFirstChild(plr.Name).Value + (v)
		else
			if v:sub(0,2) == "W:" then
				plr.Character.Humanoid.WalkSpeed = plr.Character.Humanoid.WalkSpeed + tonumber(v:sub(3))
			else
				--plr.Character.Humanoid.MaxHealth = v + 50
				--plr.Character.Humanoid.Health = v
				plr.Character.Humanoid.MaxHealth = plr.Character.Humanoid.MaxHealth + tonumber(v:sub(3))
				plr.Character.Humanoid.Health = plr.Character.Humanoid.Health
			end
		end
	end
end

How do I get this to run in both server and client and not break in the game? Also, perhaps unrelated is my test mode for server when I press F7 the player skin does not load and no rewards are given to player --- that is regardless of any errors in the Output

If I just leave this everything without trying to fix the error "attempt to index local 'plr' ( a nil value) everything works in the game just fine though should I just ignore the error ?