I even shut off all addons in this list with this bug and it didnt fix the issue i am using the latest version the addon is unusable atm

1797x Hekili\Core.lua:1436: attempt to call field 'ScanEvents' (a nil value)
[string "@Hekili\Core.lua"]:1436: in function `ProcessHooks'
[string "@Hekili\UI.lua"]:825: in function <Hekili\UI.lua:689>

Locals:
self =

{
GetTTD = defined @Hekili\Targets.lua:654
DeserializeStyle = defined @Hekili\Options.lua:8591
modules = {
}
EmbedAbilityOptions = defined @Hekili\Options.lua:3463
Scripts = {
}
GetDeathClockByGUID = defined @Hekili\Targets.lua:639
After = defined @Hekili\Utils.lua:268
NewSpellInfo = true
Run = defined @Hekili\Hekili.lua:223
UpdateDisplayVisibility = defined @Hekili\UI.lua:1601
IsEnabled = defined @AstralKeys\Libs\AceAddon-3.0\AceAddon-3.0.lua:482
KeybindInfo = {
}
RemoveHold = defined @Hekili\State.lua:5493
CreateCustomDisplay = defined @Hekili\UI.lua:1550
ToggleHold = defined @Hekili\State.lua:5518
SpecializationChanged = defined @Hekili\Classes.lua:4923
UpdateUseItems = defined @Hekili\Events.lua:558
SetSpecOption = defined @Hekili\Options.lua:3377
GetDefaults = defined @Hekili\Options.lua:521
dumpKeyCache = {
}
SetEnabledState = defined @AstralKeys\Libs\AceAddon-3.0\AceAddon-3.0.lua:455
GetDisplayByName = defined @Hekili\Core.lua:1076
Options = {

There is no 8.7.3.

You have the wrong version of WeakAuras installed.

If you update Hekili, the error will stop but you should also install the right version of WeakAuras.

It's Twitch's fault.