Errors with a loop/code

Hello, so I have been having this issue with my code, I'm trying to make a redstone clock as an option in this lighting system but it keeps throwing me this error please help!

https://gyazo.com/6103228e59e5e307e8d671a4ff4b8a4b

https://gyazo.com/3da6f150edb56084556af206f3a7d37c

It would be easier to read your code if you pastebin'd it, but it looks like you're using "else if" where you meant to use "elseif".

For example, notice how this:

if <condition1> then
	-- do stuff
else
	if <condition2> then
		-- do other stuff
	else
		if <condition3> then
			-- do something different
		end
	end
end

… requires more end statements than this:

if <condition1> then
	-- do stuff
elseif <condition2> then
	-- do other stuff
elseif <condition3> then
	-- do something different
end

http://lua-users.org/wiki/ControlStructureTutorial