Created by: A1exy

在最新的paddleslim库和paddleseg库上进行mobilenetv2 deeplabv3+的pruning，配置裁剪参数后报以下错误，请问是什么原因。

Parameter[decoder/separable_conv1/pointwise/BatchNorm/beta] loaded sucessfully! Parameter[decoder/separable_conv1/pointwise/BatchNorm/moving_mean] loaded sucessfully! Parameter[decoder/separable_conv1/pointwise/BatchNorm/moving_variance] loaded sucessfully! Parameter[decoder/separable_conv2/depthwise/weights] loaded sucessfully! Parameter[decoder/separable_conv2/depthwise/BatchNorm/gamma] loaded sucessfully! Parameter[decoder/separable_conv2/depthwise/BatchNorm/beta] loaded sucessfully! Parameter[decoder/separable_conv2/depthwise/BatchNorm/moving_mean] loaded sucessfully! Parameter[decoder/separable_conv2/depthwise/BatchNorm/moving_variance] loaded sucessfully! Parameter[decoder/separable_conv2/pointwise/weights] loaded sucessfully! Parameter[decoder/separable_conv2/pointwise/BatchNorm/gamma] loaded sucessfully! Parameter[decoder/separable_conv2/pointwise/BatchNorm/beta] loaded sucessfully! Parameter[decoder/separable_conv2/pointwise/BatchNorm/moving_mean] loaded sucessfully! Parameter[decoder/separable_conv2/pointwise/BatchNorm/moving_variance] loaded sucessfully! Parameter[logit/weights] loaded sucessfully! Parameter[logit/biases] loaded sucessfully! 332/332 pretrained parameters loaded successfully! Traceback (most recent call last): File "./slim/prune/train_prune.py", line 504, in main(args) File "./slim/prune/train_prune.py", line 491, in main train(cfg) File "./slim/prune/train_prune.py", line 347, in train only_graph=False)[0] File "/home/hpc/ccx/paddle1.7/PaddleSlim/paddleslim/prune/pruner.py", line 82, in prune param_t = np.array(scope.find_var(param).get_tensor()) AttributeError: 'NoneType' object has no attribute 'get_tensor'

@wanghaoshuang