Created by: cqzhao

在AiStudio上运行FasterRCNN的例子, Server端正常运行，使用test_client进行预测时，客户端报错：

W0609 09:23:51.480001   257 predictor.hpp:129] inference call failed, message: [E1008]Reached timeout=20000ms @0.0.0.0:0
E0609 09:23:52.275004   257 general_model.cpp:526] failed call predictor with req: insts 
Traceback (most recent call last):
  File "test_client.py", line 40, in <module>
    fetch_map["image"] = sys.argv[3]
TypeError: 'NoneType' object does not support item assignment