GetMetaInfo Segmentation fault

hi,

mod_handle_ = Module::LoadFromFile(model_path_);

DLDevice dev = GetTVMDevice(device_, 0);

graph_handle_ = mod_handle_.GetFunction("default")(dev);



meta_info_.n_inputs = graph_handle_.GetFunction("get_num_inputs")();

meta_info_.n_outputs = graph_handle_.GetFunction("get_num_outputs")();

std::cout<< "inputs:" << meta_info_.n_inputs << " outputs:" << meta_info_.n_outputs <<std::endl;

Map<String, ObjectRef> tvm_input_info = graph_handle_.GetFunction("get_input_info")();

I get the n_inputs and n_outputs but when :

Map<String, ObjectRef> tvm_input_info = graph_handle_.GetFunction(“get_input_info”)();

got an error: Segmentation fault (core dumped)