..\AddOns\Quartz\modules\EnemyCasts.lua line 179: attempt to perform arithmetic on local 'castTime' (a nil value)

is the message under count. each day, the count resets so while I may get 3 to 5 of them in a day.. next day it is 1. here is whole bug window:

Date: 2019-09-09 10:12:07
ID: 1
Error occured in: Global
Count: 1
Message: ..\AddOns\Quartz\modules\EnemyCasts.lua line 179:
attempt to perform arithmetic on local 'castTime' (a nil value)
Debug:
Quartz\modules\EnemyCasts.lua:179: ?()
...sic\Libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:119:
...sic\Libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:119
[C]: ?
...sic\Libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:29:
...sic\Libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:25
...sic\Libs\CallbackHandler-1.0\CallbackHandler-1.0.lua:64: Fire()
...AddOns\Bartender4\libs\AceEvent-3.0\AceEvent-3.0.lua:120:
...AddOns\Bartender4\libs\AceEvent-3.0\AceEvent-3.0.lua:119
Locals:
None
AddOns:
Swatter, v8.2.6377 (SwimmingSeadragon)
AtlasLootClassic, vv1.1.9-beta
AucAdvanced, v8.2.6385 (SwimmingSeadragon)
AucFilterBasic, v8.2.6364 (SwimmingSeadragon)
AucStatHistogram, v8.2.6366 (SwimmingSeadragon)
AucStatiLevel, v8.2.6370 (SwimmingSeadragon)
AucStatPurchased, v8.2.6367 (SwimmingSeadragon)
AucStatSimple, v8.2.6368 (SwimmingSeadragon)
AucStatStdDev, v8.2.6369 (SwimmingSeadragon)
AucUtilFixAH, v8.2.6371 (SwimmingSeadragon)
Bartender4, v4.8.7
BeanCounter, v8.2.6381 (SwimmingSeadragon)
CTBuffMod, v8.2.0.5
CTCore, v8.2.0.8
CTExpenseHistory, v8.2.0.1
CTLibrary, v8.2.0.5
CTMailMod, v8.2.0.8
CTMapMod, v8.2.0.8
CTPartyBuffs, v8.2.0.1
CTRaidAssist, v8.2.0.8
CTTimer, v8.2.0.1
CTViewport, v8.2.0.4
Details, v
DetailsTinyThreat, v
KuiMedia, v
KuiNameplates, v
KuiNameplatesCore, v
OmniCC, v8.2.4
Prat30, v3.2.31
Prat30Libraries, v
Quartz, v3.5.1
Questie, v4.0.18 BETA
ShadowedUnitFrames, vv4.2-Classic-Beta7-1-g69bd965
SlideBar, v8.2.6375 (SwimmingSeadragon)
Stubby, v8.2.6376 (SwimmingSeadragon)
TomTom, vv11302-1.0.7
VendorPrice, v1.2.2
WeakAuras, v2.14.6
BlizRuntimeLib_enUS v1.13.2.11302
(ck=49e)

haha oops.

just had this popup as well: ..\AddOns\Quartz\modules\EnemyCasts.lua line 212:
attempt to compare number with nil

This is from Quartz, not KNP?