Errors

Stupid errors in Libraries, fixable ?

Error:  attempt to compare nil with number
AddOn: Lern2Spell
File: GratuityLib.lua
Line: 39
Count: 2
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Error:  attempt to compare number with nil
AddOn: Lern2Spell
File: GratuityLib.lua
Line: 39
Count: 4
--------------------------------------------------
Error:  attempt to compare nil with number
File: ...ddOns\AutoAttack\BabbleLib-Spell\BabbleLib-Spell.lua
Line: 4
Count: 1
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Error:  attempt to compare two nil values
AddOn: Lern2Spell
File: GratuityLib.lua
Line: 39
Count: 1
--------------------------------------------------
Error:  attempt to compare number with nil
AddOn: FuBar_HonorFu
File: GloryLib.lua
Line: 3
Count: 1