MTCNN自己转换出现错误

自己转换MTCNN的时候出现以下错误，不支持吗？
--> Loading model
W Not match node rnet/prelu4/Neg_1 Neg
E Catch exception when loading tensorflow model: ./mtcnnpb/rnet.pb!
T Traceback (most recent call last):
T   File "rknn/api/rknn_base.py", line 186, in rknn.api.rknn_base.RKNNBase.load_tensorflow
T   File "rknn/base/RKNNlib/converter/convert_tf.py", line 589, in rknn.base.RKNNlib.converter.convert_tf.convert_tf.match_paragraph_and_param
T   File "rknn/base/RKNNlib/converter/convert_tf.py", line 488, in rknn.base.RKNNlib.converter.convert_tf.convert_tf._tf_push_ready_node
T TypeError: 'NoneType' object is not iterable
done
--> Building model
E Model or data is None, please load model first.
done
E RKNN model data is None, please load model first!