ChangeHistoryService recording not working properly

[GamersInternational]

Right. Roblox has plans to depreciate the SetWaypoint function for ChangeHistoryService in a few months, and I’m completely confused on how to use the new recording feature. I’ve tried implementing it in an auroraSuite tool, and every single time no matter what, I get an error being ‘unable to cast null to token’.

I never had any problems using SetWaypoint before, but I really need help in understanding why I’m experiencing it. Every time I run into the error, I literally have to open another place or template, since the script won’t run, even if I make changes to it and save my plugin again.

script.Parent.MouseButton1Click:Connect(function()
	local st = script.Parent.Parent.StartBox
	local samt = script.Parent.Parent.IntervalBox
	local chs = game:GetService("ChangeHistoryService")
	local tag = game:GetService("CollectionService")

	if st.Text == "" then
		error("auroraSuite: Unable to create day/night cycle due to not having any integer values in some textboxes.")
	elseif samt.Text == "" then
		error("auroraSuite: Unable to create day/night cycle due to not having any integer values in some textboxes.")
	elseif game.ServerScriptService:FindFirstChild("DayAndNightScript") then
		warn("auroraSuite: A day/night cycle script was already found, and we're unable to edit the existing one. Try deleting the existing one first.")
	else
		local record = chs:TryBeginRecording("auroraSuite: Day Night Cycle")
		
		if record then
			local sc = Instance.new("Script")
			sc.Parent = game.ServerScriptService
			sc.Name = "DayAndNightScript"
			sc.Source = 'local minutesAfterMidnight = ' .. st.Text ..
				'\n while true do \n' ..
				'game.Lighting:SetMinutesAfterMidnight(minutesAfterMidnight) \n' ..
				'minutesAfterMidnight = minutesAfterMidnight + 1 \n' ..
				'task.wait(' .. samt.Text .. ') \n' ..
				'end'
			tag:AddTag(sc, "auroraSuite-generated")
			
			chs:FinishRecording(record, Enum.FinishRecordingOperation)
		end
		
		if plugin:GetSetting("DebugMode") == true then
			print("auroraSuite: Made day and night cycle successfully in game.ServerScriptService.")
			plugin:OpenScript(game.ServerScriptService.DayAndNightScript)
		end
	end
end)

  20:54:32.516  Unable to cast null to token  -  Edit - Script:28
  20:54:32.517  Stack Begin  -  Studio
  20:54:32.517  Script 'user_aurorasuite.rbxmx.aurorasuite.UI.ScrollingFrame.DayNightCycleOpen.TextButton.Script', Line 28  -  Studio - Script:28
  20:54:32.517  Stack End  -  Studio

[GamersInternational]

After a helpful Roblox admin gave me some advice, I realised I had somehow made the dumb mistake of not having .Commit at the end of FinishRecordingOperation.

Thank you to them!