Message: integer overflow attempting to store inf
Time: Fri Oct 18 21:19:46 2019
Count: 3145
Stack: integer overflow attempting to store inf
[C]: in function `format'
Interface\AddOns\ShestakUI\Core\Functions.lua:1399: in function <Interface\AddOns\ShestakUI\Core\Functions.lua:1396>
Interface\AddOns\ShestakUI\Core\Functions.lua:1421: in function <Interface\AddOns\ShestakUI\Core\Functions.lua:1410>

Locals: (*temporary) = "%dd"
(*temporary) = Infinite

when my target is hunter or Paladin, this error will show, and they both have the aura or aspect

The LibClassicDurations library needs to be updated. I just confirmed it in my dev build. No issues with Auras.