Problem of transfering pb. to tflite.

[tiffanyXiaoqing]

I did not use docker. .I used the following command line on Pycharm Terminal based on Windows 10 platform.

"tflite_convert --saved_model_dir=saved_model/ --output_file yolo_v3.tflite --saved_model_signature_key='predict'"
However, it showed that
ModuleNotFoundError: No module named 'tensorflow.contrib.lite.python.tflite_convert'
Is the error because of my Tensorflow version? Mine is Tensorflow 1.13.1.

I would appreciate if you can help.