求救：nanodet的caffe模型转rknn时候出错

--> config model
done
--> Loading model
done
--> Building model
E Catch exception when building RKNN model!
E Traceback (most recent call last):
E   File "rknn/api/rknn_base.py", line 737, in rknn.api.rknn_base.RKNNBase.build
E   File "rknn/api/rknn_base.py", line 1644, in rknn.api.rknn_base.RKNNBase._quantize2
E   File "rknn/base/RKNNlib/app/medusa/quantization.py", line 105, in rknn.base.RKNNlib.app.medusa.quantization.Quantization.run
E   File "rknn/base/RKNNlib/app/medusa/quantization.py", line 38, in rknn.base.RKNNlib.app.medusa.quantization.Quantization._run_quantization
E   File "rknn/base/RKNNlib/RKNNnetbuilder.py", line 286, in rknn.base.RKNNlib.RKNNnetbuilder.RKNNNetBuilder.build
E   File "rknn/base/RKNNlib/RKNNnetbuilder.py", line 305, in rknn.base.RKNNlib.RKNNnetbuilder.RKNNNetBuilder.build_layer
E   File "rknn/base/RKNNlib/RKNNnetbuilder.py", line 305, in rknn.base.RKNNlib.RKNNnetbuilder.RKNNNetBuilder.build_layer
E   File "rknn/base/RKNNlib/RKNNnetbuilder.py", line 305, in rknn.base.RKNNlib.RKNNnetbuilder.RKNNNetBuilder.build_layer
E   [Previous line repeated 34 more times]
E   File "rknn/base/RKNNlib/RKNNnetbuilder.py", line 311, in rknn.base.RKNNlib.RKNNnetbuilder.RKNNNetBuilder.build_layer
E   File "rknn/base/RKNNlib/layer/RKNNlayer.py", line 262, in rknn.base.RKNNlib.layer.RKNNlayer.RKNNLayer.compute_shape
E   File "rknn/base/RKNNlib/layer/convolution.py", line 62, in rknn.base.RKNNlib.layer.convolution.Convolution.compute_out_shape
E AttributeError: 'NoneType' object has no attribute 'format'
--> init runtime
E Model is not loaded yet, this interface should be called after build or load_rknn!
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