Pointer_stringify is not defined at _NKCreateSocket

We’re experiencing an issue with the" Socket.ConnectAsync " method. my create socket call is working but when i try to connect socket shows error in webgl build " ReferenceError: Pointer_stringify is not defined at _NKCreateSocket ".

code :
_Socket = _Client.NewSocket(useMainThread: true);
await _Socket.ConnectAsync(_Session, appearOnline, connectTimeout, langTag);