用PaddleDetection对VOC数据集进行训练，训练好模型，得到best_model.pdmodel，best_model.pdparams和best_model.pdopt。

具体命令为：

! python /home/aistudio/PaddleDetection/tools/infer.py -c /home/aistudio/PaddleDetection/improve_faster_rcnn.yml \
  --infer_img=/home/aistudio/PascalVOC07_12/VOCdevkit/VOC2007/JPEGImages/004486.jpg \
  -o weights=/home/aistudio/best_model

但是报错如下，请问应该如何解决：

--------------------------------------------
C++ Call Stacks (More useful to developers):
--------------------------------------------
0 std::string paddle::platform::GetTraceBackString(std::string const&, char const*, int)
1 paddle::platform::EnforceNotMet::EnforceNotMet(std::string const&, char const*, int)
2 paddle::operators::reader::BlockingQueue > >::Receive(std::vector >*)
3 paddle::operators::reader::PyReader::ReadNext(std::vector >*)
4 std::_Function_handler (), std::__future_base::_Task_setter, std::__future_base::_Result_base::_Deleter>, unsigned long> >::_M_invoke(std::_Any_data const&)
5 std::__future_base::_State_base::_M_do_set(std::function ()>&, bool&)
6 ThreadPool::ThreadPool(unsigned long)::{lambda()#1}::operator()() const

----------------------
Error Message Summary:
----------------------
Error: Blocking queue is killed because the data reader raises an exception
[Hint: Expected killed_ != true, but received killed_:1 == true:1.] at (/paddle/paddle/fluid/operators/reader/blocking_queue.h:141)