self.shape = [int(i) for i in tensor.ShapeAsNumpy()] TypeError: 'int' object is not iterable when doing convertion

[Peize-Liu]

I convert the HITNET model from tflite to onnx model. The model can be download from this link google drive
I install tflite2onnx with pip install in prebuild version. and run with cmd: tflite2onnx ./model_float16_quant.tflite ./model_float16_quant.onnx
The error is following:

I am wondering if this is the issue with tflite model itselt or there is something wrong with the tool