segmentation fault, wsConnectionPtr null pointer in onPongByMethod

[nelyajizi]

Describe the bug
the subscription is working fine but after few seconds, I got a segmentation fault in onPongByMethod while he is trying to use wsConnectionPtr:
this->lastPongTpByMethodByConnectionIdMap[wsConnection.id][method] = timeReceived;
the bug appears with the version v6.4.4, when using the version v5.45.5, there is noticed no issue ..
To Reproduce
Steps to reproduce the behavior:
use 6.4.4:
I subscribed to Kucoin and Ascendex for marketData (depth=5) and trades in addition of sending a request within the same session once every n seconds...
after the subscription started, wait few seconds and the segmentation fault happens..

Expected behavior
no issue, receiving event normaly

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Additional context
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[cryptochassis]

Yes, I am able to reproduce the bug now.