Fatal error on `WeakBox<BaseSubscriptionListener>`

[akuzminskyi]

Duplicate elements of type 'WeakBox<BaseSubscriptionListener>' were found in a Set.

Maybe this post can help.

PubNub SDK Version 6.2.3(yes, this is not the latest).

[jguz-pubnub]

@akuzminskyi could you show how you add listeners to the PubNub instance? And how do you store SubscriptionListener variables? Are they strong references?

[akuzminskyi]

Are they strong references?

yes, and I think maybe the same listener can be trying to add twice.

if this is the case, shouldn't we ignore it and instead of:

elements.update(with: WeakBox(element))

elements.insert(WeakBox(element))

[akuzminskyi]

I think the issue is described here. so I think this issue is with the SDK implementation.

[jguz-pubnub]

I was unable to reproduce this error on 6.2.3 when attempting to add the same listener more than once. I will investigate possible new scenarios and update you on my findings in this thread

[jguz-pubnub]

Fixed in 7.3.3