I keep getting this lua error

Message: ...terface\AddOns\AethysRotation_Warlock\Affliction.lua:221: attempt to index field 'Fear' (a nil value)
Time: 01/08/18 14:22:15
Count: 457
Stack: ...terface\AddOns\AethysRotation_Warlock\Affliction.lua:221: attempt to index field 'Fear' (a nil value)
Interface\SharedXML\SharedBasicControls.lua:208: in function origErrorHandler' ...rface\AddOns\TradeSkillMaster\Debug\ErrorHandler.lua:317: in function <...rface\AddOns\TradeSkillMaster\Debug\ErrorHandler.lua:300> [C]: ? ...terface\AddOns\AethysRotation_Warlock\Affliction.lua:221: in function <...terface\AddOns\AethysRotation_Warlock\Affliction.lua:206> ...terface\AddOns\AethysRotation_Warlock\Affliction.lua:1080: in function ?'
Interface\AddOns\AethysRotation\Main.lua:431: in function <Interface\AddOns\AethysRotation\Main.lua:409>

Locals: errorMessage = "...terface\AddOns\AethysRotation_Warlock\Affliction.lua:221: attempt to index field 'Fear' (a nil value)"
DisplayMessageInternal = defined @interface\SharedXML\SharedBasicControls.lua:191
MESSAGE_TYPE_ERROR = 0

Fixed with 66d6344