model conversion failed

[happyjohn360]

I tried to convert .pb file to .tflite file.
I run "06_mobilenetv2-ssdlite/01_coco/01_float32/03_integer_quantization_with_postprocess.py" files and get this error

ValueError: Invalid tensors 'TFLite_Detection_PostProcess,TFLite_Detection_PostProcess:1,TFLite_Detection_PostProcess:2,TFLite_Detection_PostProcess:3' were found.

I've run the script to download tflite_graph.pb.
could you please check out the problem for me?
Also can you tell me where you get tflite_graph.pb?
can I convert model zoo ssdlite_mobilenet_v2_coco by your code?
Thanks!

[PINTO0309]

First do the following:
https://github.com/tensorflow/models/blob/master/research/object_detection/export_tflite_ssd_graph.py

[English ver.] [Tensorflow Lite] Various Neural Network Model quantization methods for Tensorflow Lite (Weight Quantization, Integer Quantization, Full Integer Quantization, Float16 Quantization, EdgeTPU). As of May 05, 2020.
https://qiita.com/PINTO/items/865250ee23a15339d556#4-2-7-quantize-the-model-generated-by-the-tensorflow-object-detection-api