转换tensorflow模型报错AttributeError: 'NoneType' object has no attribut...

用tensorflow object detedction的模型进行转化的时候遇到问题
E Catch exception when loading tensorflow model: ./frozen_inference_graph.pb!
E Traceback (most recent call last):
E   File "rknn/api/rknn_base.py", line 188, in rknn.api.rknn_base.RKNNBase.load_tensorflow
E   File "rknn/base/RKNNlib/converter/convert_tf.py", line 90, in rknn.base.RKNNlib.converter.convert_tf.convert_tf.__init__
E   File "rknn/base/RKNNlib/converter/tensorflowloader.py", line 41, in rknn.base.RKNNlib.converter.tensorflowloader.TF_Graph_Preprocess.__init__
E AttributeError: 'NoneType' object has no attribute 'op'
done
--> Building model
Traceback (most recent call last):
  File "ssd.py", line 75, in <module>
    ret = rknn.build(do_quantization=True, dataset='./dataset.txt')
  File "/usr/local/lib/python3.5/dist-packages/rknn/api/rknn.py", line 220, in build
    inputs = self.rknn_base.net.get_input_layers()
AttributeError: 'NoneType' object has no attribute 'get_input_layers'


tensorflow版本是1.12, rknn是1.3.0

tensorflow升级到1.13.0   模型也在该版本下训练保存。
rknn toolkit升级到1.3.2

请问楼主解决了吗？