Create Graph failed, err info:0 in for loop

[azuredsky]

class A
{
    void init()
   {
        init_tengine();
        this->_graph = create_graph(nullptr, "tengine", tmfile_name_.c_str());
    }
    void run()
    {
        prerun_graph(this->_graph) ;
       run_graph(this->_graph, 1);
    }
    void release()
    {
        postrun_graph(this->_graph);
        destroy_graph(this->_graph);
        release_tengine();
    }
private:
graph_t  _graph;
};

A a;
for (; ;)
{
    a.init();
    a.run();
    a.release();
}

I use A a;
when run a in for ,it crash in second loop call init() function.
it print : no serializer found for tengine