Issue with UnitBuff

[Caellian]

Right so, this is a tiny addon i've had for a while to auto answer ready checks depnding on the situation.

Everything works exept the flask part, flask is always nil and i don't understand what i did wrong.

local _, caelUI = ...

caelUI.readycheck = caelUI.createModule("ReadyCheck")

local GetSpellName = function(spellId)
	return GetSpellInfo(spellId)
end

local flasks = {
	-- Cataclysm
	GetSpellName(80719),		-- Flask of Steelskin
	GetSpellName(80720),		-- Flask of the Draconic Mind
	GetSpellName(80721),		-- Flask of the Winds
	GetSpellName(80723),		-- Flask of Titanic Strength
	GetSpellName(94162),		-- Flask of Flowing Water

	-- Pandaria
	GetSpellName(105694),	-- Flask of the Earth
	GetSpellName(105691),	-- Flask of the Warm Sun
	GetSpellName(105696),	-- Flask of Winter's Bite
	GetSpellName(105693),	-- Flask of Falling Leaves
	GetSpellInfo(105689),	-- Flask of Spring Blossoms
}

ReadyCheckListenerFrame:SetScript("OnShow", nil)

local isGuildGroup

caelUI.readycheck:SetScript("OnEvent", function(self, event)
	if event == "PLAYER_ENTERING_WORLD" then
		hooksecurefunc(GuildInstanceDifficulty, "Show", function()
			isGuildGroup = true
		end)

		hooksecurefunc(GuildInstanceDifficulty, "Hide", function()
			isGuildGroup = false
		end)
	elseif event == "READY_CHECK" then
		PlaySoundFile([[Sound\Interface\ReadyCheck.wav]], "Master")

		local food = UnitBuff("player", GetSpellName(104280))

		for k, v in pairs(flasks) do
			local flask =  UnitBuff("player", k)
		end

		if (not isGuildGroup and food) or (isGuildGroup and flask and food) then
			ReadyCheckFrame:Hide()
			ConfirmReadyCheck(1)
		end
	end
end)

for _, event in next, {
	"PLAYER_ENTERING_WORLD",
	"READY_CHECK",
} do
	caelUI.readycheck:RegisterEvent(event)
end