cnn_b not found in checkpoint

[zyl132]

NotFoundError (see above for traceback): Restoring from checkpoint failed. This is most likely due to a Variable name or other graph key that is missing from the checkpoint. Please ensure that you have not altered the graph expected based on the checkpoint. Original error:

Key conv-maxpool-3/cnn_b not found in checkpoint
[[node save/RestoreV2 (defined at /root/anaconda3/envs/tensorflow-gpu/lib/python3.6/site-packages/tensorflow/contrib/tpu/python/tpu/tpu_estimator.py:2418) = RestoreV2[dtypes=[DT_FLOAT, DT_FLOAT, DT_FLOAT, DT_FLOAT, DT_FLOAT, ..., DT_FLOAT, DT_FLOAT, DT_INT64, DT_FLOAT, DT_FLOAT], _device="/job:localhost/replica:0/task:0/device:CPU:0"](_arg_save/Const_0_0, save/RestoreV2/tensor_names, save/RestoreV2/shape_and_slices)]]