sometime, error in node::GetVariables

[Kyrial]

Hello,
Sometimes I get errors from OpcUA::Node::GetVariables.

calling this function causes a boost error:
opcuacored!boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::io::too_many_args> >::~clone_impl<boost::exception_detail::error_info_injector<boost::io::too_many_args> >

here the call stack:

the error seems to occur during consequent calls to the function, (call however protected by a Mutex)

I thank you in advance for the help you can give me,

Melvin