Android call fail issue - Voice call

Hi Team, we have enabled a call option in our application through zendesk however, even before we could make a call through we are receiving call failed issue. We tired to even delay the call by 2 sec yet its not working - I am attaching the build details need your help and support on the same asap. 

implementation("zendesk.talk:talk-android:1.1.0")

private fun checkCallAvailability() {
   
    Chat.INSTANCE.clearCache()

  //  isClick=true
    //myApplication.talk = Talk.create(Zendesk.INSTANCE)
    //Chat.INSTANCE.init(baseActivity, Vars.ZEN_DESK_ACCOUNT_KEY, Vars.ZEN_DESK_APP_ID)
    val job = lineStatus(myApplication.talk!!, Vars.ZEN_DESK_DIGITAL_LINE_NICK_NAME)
    job.addListener(null, object : TalkJavaCompatListener<LineStatusResult>, Executor {
        override fun onSuccess(@NonNull result: LineStatusResult) {
            Chat.INSTANCE.clearCache()
            if (result is LineStatusResult.Success) {
                val success: LineStatusResult.Success = result
                // Chat.INSTANCE.clearCache()
                isClick=true
                if (success.agentAvailable) {
                    myApplication.talk!!.startCallSetupFlow(
                        context = baseActivity,
                        digitalLine = Vars.ZEN_DESK_DIGITAL_LINE_NICK_NAME,
                        successIntent = null
                    )
                    logRequest("6")
                } else {
                    baseActivity.showToast("Agent is Not Available ")
                }
            } else if (result is LineStatusResult.Failure) {
                baseActivity.showToast("Zendesk Not Available at the moment.")
            } else {
                baseActivity.showToast("Zendesk Not Available at the moment.")
            }
        }
        override fun onError(@NonNull throwable: Throwable) {
            throwable.printStackTrace()
            Log.e("test_received11", "received")
        }

        override fun execute(p0: Runnable?) {
            Log.e("test_received22", "received")
        }
    })
}