我想根据https://github.com/PINTO0309/openvino2tensorflow仓库的文档将我的openvino模型转换为tf saved_model。
但是当我使用命令时：openvino2tensorflow --model_path model.xml --output_saved_model --output_weight_and_json
我得到一个错误：

ERROR: cannot pickle 'module' object
Traceback (most recent call last):
  File "/usr/local/bin/openvino2tensorflow", line 7156, in convert
    open(f'{model_output_path}/model_float32.json', 'w').write(model.to_json())
  File "/usr/local/lib/python3.8/dist-packages/keras/engine/training.py", line 3086, in to_json
    model_config = self._updated_config()
  File "/usr/local/lib/python3.8/dist-packages/keras/engine/training.py", line 2954, in _updated_config
    config = self.get_config()
  File "/usr/local/lib/python3.8/dist-packages/keras/engine/functional.py", line 781, in get_config
    return copy.deepcopy(get_network_config(self, config=config))
  File "/usr/lib/python3.8/copy.py", line 146, in deepcopy
    y = copier(x, memo)
  File "/usr/lib/python3.8/copy.py", line 230, in _deepcopy_dict
    y[deepcopy(key, memo)] = deepcopy(value, memo)
  File "/usr/lib/python3.8/copy.py", line 146, in deepcopy
    y = copier(x, memo)
  File "/usr/lib/python3.8/copy.py", line 205, in _deepcopy_list
    append(deepcopy(a, memo))
  File "/usr/lib/python3.8/copy.py", line 172, in deepcopy
    y = _reconstruct(x, memo, *rv)
  File "/usr/lib/python3.8/copy.py", line 296, in _reconstruct
    value = deepcopy(value, memo)
  File "/usr/lib/python3.8/copy.py", line 146, in deepcopy
    y = copier(x, memo)
  File "/usr/lib/python3.8/copy.py", line 230, in _deepcopy_dict
    y[deepcopy(key, memo)] = deepcopy(value, memo)
  File "/usr/lib/python3.8/copy.py", line 146, in deepcopy
    y = copier(x, memo)
  File "/usr/lib/python3.8/copy.py", line 210, in _deepcopy_tuple
    y = [deepcopy(a, memo) for a in x]
  File "/usr/lib/python3.8/copy.py", line 210, in <listcomp>
    y = [deepcopy(a, memo) for a in x]
  File "/usr/lib/python3.8/copy.py", line 146, in deepcopy
    y = copier(x, memo)
  File "/usr/lib/python3.8/copy.py", line 210, in _deepcopy_tuple
    y = [deepcopy(a, memo) for a in x]
  File "/usr/lib/python3.8/copy.py", line 210, in <listcomp>
    y = [deepcopy(a, memo) for a in x]
  File "/usr/lib/python3.8/copy.py", line 161, in deepcopy
    rv = reductor(4)
TypeError: cannot pickle 'module' object

这个错误发生在model.to_json()的执行过程中，我不知道如何解决它。有没有办法修复这个错误或者用其他方式保存json？