I am throwing an SubscriptionException and its logged as below, but will it reach the client. I wanted to notify the client if the itemName used for subscription is invalid

HTML Code:
|ERROR|LightstreamerLogger.subscriptions|SERVER POOLED THREAD 8     |Subscription error for item invalidKey
Inside subscribe method im throwing SubscriptionException

Client Listener:
HTML Code:
mySubscription.addListener({    onSubscriptionError:(code, message)=>{
I am angular JS as client interface and java adapter.