There is no sound to be heard.
After / console scriptErrors 1
do i I get this error message:

Message: ...rface\AddOns\ProjectAzilroka\Modules\QuestSounds.lua:56: attempt to call field 'ReadyForTurnIn' (a nil value)
Time: Mon May 31 19:02:04 2021
Count: 27
Stack: ...rface\AddOns\ProjectAzilroka\Modules\QuestSounds.lua:56: attempt to call field 'ReadyForTurnIn' (a nil value)
[string "@interface\AddOns\TradeSkillMaster\LibTSM\Service\ErrorHandler.lua"]:758: in function <...Ons\TradeSkillMaster\LibTSM\Service\ErrorHandler.lua:717>
[string "=[C]"]: in function ReadyForTurnIn' [string "@Interface\AddOns\ProjectAzilroka\Modules\QuestSounds.lua"]:56: in function ?'
[string "@interface\AddOns\ElvUI\Libraries\Ace3\AceTimer-3.0\AceTimer-3.0.lua"]:55: in function <...s\ElvUI\Libraries\Ace3\AceTimer-3.0\AceTimer-3.0.lua:50>

Locals: errMsg = "...rface\AddOns\ProjectAzilroka\Modules\QuestSounds.lua:56: attempt to call field 'ReadyForTurnIn' (a nil value)"
isBugGrabber = nil
tsmErrMsg = nil
oldModule = nil
private =

{
globalNameTranslation = {
}
FormatErrorMessageSection = defined @interface\AddOns\TradeSkillMaster\LibTSM\Service\ErrorHandler.lua:517
ErrorHandler = defined @interface\AddOns\TradeSkillMaster\LibTSM\Service\ErrorHandler.lua:134
origErrorHandler = defined @interface\SharedXML\SharedBasicControls.lua:296
hitInternalError = false
CreateErrorFrame = defined @interface\AddOns\TradeSkillMaster\LibTSM\Service\ErrorHandler.lua:536
num = 0
SanitizeString = defined @interface\AddOns\TradeSkillMaster\LibTSM\Service\ErrorHandler.lua:510
AddonBlockedHandler = defined @interface\AddOns\TradeSkillMaster\LibTSM\Service\ErrorHandler.lua:502
GetStackLevelInfo = defined @interface\AddOns\TradeSkillMaster\LibTSM\Service\ErrorHandler.lua:344
ParseLocals = defined @interface\AddOns\TradeSkillMaster\LibTSM\Service\ErrorHandler.lua:396
ignoreErrors = false
errorReports = {
}
IsTSMAddon = defined @interface\AddOns\TradeSkillMaster\LibTSM\Service\ErrorHandler.lua:478
localLinesTemp = {
}
GetStackInfo = defined @interface\AddOns\TradeSkillMaster\LibTSM\Service\ErrorHandler.lua:313
}
MAX_STACK_DEPTH = 50
OLD_TSM_MODULES = {
1 = "TradeSkillMaster_Accounting"
2 = "TradeSkillMaster_AuctionDB"
3 = "TradeSkillMaster_Auctioning"
4 = "TradeSkillMaster_Crafting"
5 = "TradeSkillMaster_Destroying"
6 = "TradeSkillMaster_Mailing"
7 = "TradeSkillMaster_Shopping"
8 = "TradeSkillMaster_Vendoring"
9 = "TradeSkillMaster_Warehousing"
}

Sounds stopped working for me in both Classic Era and TBC.
Getting this from the log:
Message: ...rface\AddOns\ProjectAzilroka\Modules\QuestSounds.lua:56: attempt to call field 'ReadyForTurnIn' (a nil value)
Time: Mon May 31 21:55:50 2021
Count: 2
Stack: ...rface\AddOns\ProjectAzilroka\Modules\QuestSounds.lua:56: attempt to call field 'ReadyForTurnIn' (a nil value)
[string "@interface\AddOns\ProjectAzilroka\Modules\QuestSounds.lua"]:56: in function `?'
[string "@interface\AddOns\ProjectAzilroka\Libs\Ace3\AceTimer-3.0\AceTimer-3.0.lua"]:55: in function <...jectAzilroka\Libs\Ace3\AceTimer-3.0\AceTimer-3.0.lua:50>

Locals: self =

{
SetDefaultModuleLibraries = defined @interface\AddOns\ProjectAzilroka\Libs\Ace3\AceAddon-3.0\AceAddon-3.0.lua:367
SetQuest = defined @interface\AddOns\ProjectAzilroka\Modules\QuestSounds.lua:26
Enable = defined @interface\AddOns\ProjectAzilroka\Libs\Ace3\AceAddon-3.0\AceAddon-3.0.lua:294
UnregisterAllEvents = defined @interface\AddOns\ProjectAzilroka\Libs\Ace3\CallbackHandler-1.0\CallbackHandler-1.0.lua:174
EnableModule = defined @interface\AddOns\ProjectAzilroka\Libs\Ace3\AceAddon-3.0\AceAddon-3.0.lua:332
modules = {
}
GetModule = defined @interface\AddOns\ProjectAzilroka\Libs\Ace3\AceAddon-3.0\AceAddon-3.0.lua:210
IterateEmbeds = defined @interface\AddOns\ProjectAzilroka\Libs\Ace3\AceAddon-3.0\AceAddon-3.0.lua:442
defaultModuleLibraries = {
}
TimeLeft = defined @interface\AddOns\ProjectAzilroka\Libs\Ace3\AceTimer-3.0\AceTimer-3.0.lua:172
ScheduleRepeatingTimer = defined @interface\AddOns\ProjectAzilroka\Libs\Ace3\AceTimer-3.0\AceTimer-3.0.lua:129
CancelAllTimers = defined @interface\AddOns\ProjectAzilroka\Libs\Ace3\AceTimer-3.0\AceTimer-3.0.lua:160
QuestID = 8346
IsPlaying = false
SetDefaultModulePrototype = defined @interface\AddOns\ProjectAzilroka\Libs\Ace3\AceAddon-3.0\AceAddon-3.0.lua:409
GetOptions = defined @interface\AddOns\ProjectAzilroka\Modules\QuestSounds.lua:137
PlaySoundFile = defined @interface\AddOns\ProjectAzilroka\Modules\QuestSounds.lua:35
ObjectivesComplete = 0
name = "ProjectAzilroka_QuestSounds"
Initialize = defined @interface\AddOns\ProjectAzilroka\Modules\QuestSounds.lua:181
IsEnabled = defined @interface\AddOns\ProjectAzilroka\Libs\Ace3\AceAddon-3.0\AceAddon-3.0.lua:451
orderedModules = {
}
ScheduleTimer = defined @interface\AddOns\ProjectAzilroka\Libs\Ace3\AceTimer-3.0\AceTimer-3.0.lua:94
DisableModule = defined @interface\AddOns\ProjectAzilroka\Libs\Ace3\AceAddon-3.0\AceAddon-3.0.lua:350
Authors = "Azilroka"
ObjectivesTotal = 0
Description = "Audio for Quest Progress & Completions."
baseName = "ProjectAzilroka"
RegisterMessage = defined @interface\AddOns\ProjectAzilroka\Libs\Ace3\CallbackHandler-1.0\CallbackHandler-1.0.lua:90
UnregisterMessage = defined @interface\AddOns\ProjectAzilroka\Libs\Ace3\CallbackHandler-1.0\CallbackHandler-1.0.lua:153
BuildProfile = defined @interface\AddOns\ProjectAzilroka\Modules\QuestSounds.lua:165
RegisterSounds = defined @interface\AddOns\ProjectAzilroka\Modules\QuestSounds.lua:92
QUEST_WATCH_UPDATE = defined @interface\AddOns\ProjectAzilroka\Modules\QuestSounds.lua:88
GetName = defined @interface\AddOns\ProjectAzilroka\Libs\Ace3\AceAddon-3.0\AceAddon-3.0.lua:279
NewModule = defined @interface\AddOns\ProjectAzilroka\Libs\Ace3\AceAddon-3.0\AceAddon-3.0.lua:235
IsModule = defined @interface\AddOns\ProjectAzilroka\Libs\Ace3\AceAddon-3.0\AceAddon-3.0.lua:217
db = {
}
SetDefaultModuleState = defined @interface\AddOns\ProjectAzilroka\Libs\Ace3\AceAddon-3.0\AceAddon-3.0.lua:387
CountCompletedObjectives = defined @interface\AddOns\ProjectAzilroka\Modules\QuestSounds.lua:14
Credits = "Yoco"
SetEnabledState = defined @interface\AddOns\ProjectAzilroka\Li