Line 293 tries to reference the GCDasOffGCD setting for sacrificial pact when it should reference OffGCDasOffGCD. This periodically causes errors and the rotation to disappear temporarily.

The Error Generated:
Message: Interface\AddOns\HeroRotation_DeathKnight\Unholy.lua:293: attempt to index field 'GCDasOffGCD' (a nil value)
Time: Tue Dec 8 20:54:05 2020
Count: 396
Stack: Interface\AddOns\HeroRotation_DeathKnight\Unholy.lua:293: attempt to index field 'GCDasOffGCD' (a nil value)
[string "=[C]"]: ?
[string "@interface\AddOns\HeroRotation_DeathKnight\Unholy.lua"]:293: in function <Interface\AddOns\HeroRotation_DeathKnight\Unholy.lua:238>
[string "@interface\AddOns\HeroRotation_DeathKnight\Unholy.lua"]:434: in function `?'
[string "@interface\AddOns\HeroRotation\Main.lua"]:445: in function <Interface\AddOns\HeroRotation\Main.lua:423>

Line 293 in Unholy.lua:
if HR.Cast(S.SacrificialPact, Settings.Commons.GCDasOffGCD.SacrificialPact, nil, not TargetIsInRange[8]) then return "sacrificial_pact cooldown 13"; end

Commons Section in Settings.lua:
Commons = {
UseDeathStrikeHP = 60, -- % HP threshold to try to heal with Death Strike
UseDarkSuccorHP = 80, -- % HP threshold to use Dark Succor's free Death Strike
UsePotions = true,
UseTrinkets = true,
TrinketDisplayStyle = "Suggested",
EssenceDisplayStyle = "Suggested",
CovenantDisplayStyle = "Suggested",
RaiseDeadDisplayStyle = "Suggested",
OffGCDasOffGCD = {
Trinkets = true,
Potions = true,
Racials = true,
MindFreeze = true,
DeathAndDecay = false,
SacrificialPact = true,
ArcaneTorrent = true
}

Bump

Fixed in commit 073fcbd