1.  The information from the Issue Reporting tab ( /hekili > Issue Reporting ).  This provides your talent and gear information.  You can paste it to pastebin.com and provide a link here.

build: v9.0.2-1.0.20
level: 60 (60)
class: PALADIN
spec: protection

talents: blessed_hammer
blinding_light
divine_purpose
first_avenger
sanctified_wrath
unbreakable_spirit

pvptalents: none

covenant: kyrian

sets: none

gear: chain_of_the_purposebound = 1
darkmoon_deck_voracity = 1
drape_of_inscrutable_purpose = 1
emberscarred_girdle = 1
gorewrought_loop = 1
honortoll_gavel = 1
kudebehs_remarkable_targe = 1
overflowing_ember_mirror = 1
precious_ribbon = 1
sapsteel_breastplate = 1
selfless_collectors_gauntlets = 1
selfless_collectors_legguards = 1
shadowghast_helm = 1
shieldguards_vambraces = 1
sprigthistle_loop = 1
steelcore_warboots = 1
tabones_branded_pauldrons = 1

legendaries: holy_avengers_engraved_sigil = 1

itemIDs: 171415, 173087, 174292, 174293, 175713, 177657, 181202, 181400, 181614, 181626, 181635, 181656, 184757, 184758, 184806, 184809, 52019

settings: aoe = 2
buffPadding = 0.25
custom1Name = Custom 1
custom2Name = Custom 2
cycle = false
cycle_min = 6
damage = true
damageDots = true
damageExpiration = 8
damagePets = false
damageRange = 0
debuffPadding = 0
enabled = true
gcdSync = true
maxRefresh = 10
maxTime = 33
nameplateRange = 8
nameplates = true
package = Protection Paladin
petbased = false
potion = potion_of_unbridled_fury
potionsReset = 20180919.1
throttleRefresh = false
throttleTime = false

toggles: cooldowns = true
custom1 = false
custom2 = false
defensives = true
essences = true
interrupts = true
mode = automatic
potions = false

3.  If reporting an error (i.e., the addon freezes and/or disables itself), please install the BugSack and BugGrabber addons as they will enable you to paste the exact error message, with detail that will help me identify where the code error is located.  You can paste the error information here or use pastebin.com for that as well.

Message: Interface\AddOns\Hekili\Options.lua:3943: attempt to concatenate local 'k' (a nil value)
Time: Wed Dec 9 13:29:20 2020
Count: 1
Stack: Interface\AddOns\Hekili\Options.lua:3943: attempt to concatenate local 'k' (a nil value)
[string "=[C]"]: ?
[string "@interface\AddOns\Hekili\Options.lua"]:3943: in function EmbedItemOption' [string "@Interface\AddOns\Hekili\Classes.lua"]:545: in function func'
[string "@interface\AddOns\Hekili\Events.lua"]:218: in function `handler'
[string "@interface\AddOns\Hekili\Events.lua"]:56: in function <Interface\AddOns\Hekili\Events.lua:50>

Locals:

Thanks for the report. Does this keep the addon from working?

It does not appear to prevent the add-on from functioning.

After updating 1.0.23, can you let me know if there is anything in /hekili > Warnings (the section only appears if there's a warning).

I'm closing due to lack of updated information.

Hi,
Apologize for the delay. There is not a 'warnings' section and the error no longer occurs after the update to 1.0.23. Thank you for the excellent work and awesome plugin.