求救：slice层接reshape层出错

slice后直接接reshape出现错误：
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