在Tensorflow v1.14中还原保存的模型

我正在使用tensorflow v1.14。我有一个已保存的模型，并且正在尝试使用以下代码还原该模型：

loader = tf.train.import_meta_graph("models/fcnn0/model.ckpt.meta")
graph = tf.get_default_graph()
sess = tf.Session()
loader.restore(sess, "models/fcnn0/model.ckpt")

我曾经在Tensorflow v1.13中使用同一段代码，并且过去可以正常工作。但是现在我得到了错误

Traceback (most recent call last):
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/client/session.py", line 1356, in _do_call
    return fn(*args)
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/client/session.py", line 1341, in _run_fn
    options, feed_dict, fetch_list, target_list, run_metadata)
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/client/session.py", line 1429, in _call_tf_sessionrun
    run_metadata)
tensorflow.python.framework.errors_impl.DataLossError: file is too short to be an sstable
     [[{{node save/RestoreV2}}]]

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/sandesh/PycharmProjects/fading/finding_code/src/load_32_64.py", line 8, in <module>
    loader.restore(sess, "models/fcnn_32_64_aenc_1331_747_3870000/model.ckpt")
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/training/saver.py", line 1286, in restore
    {self.saver_def.filename_tensor_name: save_path})
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/client/session.py", line 950, in run
    run_metadata_ptr)
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/client/session.py", line 1173, in _run
    feed_dict_tensor, options, run_metadata)
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/client/session.py", line 1350, in _do_run
    run_metadata)
  File "/usr/local/lib/python3.6/dist-packages/tensorflow/python/client/session.py", line 1370, in _do_call
    raise type(e)(node_def, op, message)
tensorflow.python.framework.errors_impl.DataLossError: file is too short to be an sstable
     [[node save/RestoreV2 (defined at home/sandesh/PycharmProjects/fading/finding_code/src/load_32_64.py:5) ]]

Original stack trace for 'save/RestoreV2':
  File "home/sandesh/PycharmProjects/fading/finding_code/src/load_32_64.py", line 5, in <module>
    loader = tf.train.import_meta_graph("models/fcnn_32_64_aenc0/model.ckpt.meta")
  File "usr/local/lib/python3.6/dist-packages/tensorflow/python/training/saver.py", line 1449, in import_meta_graph
    **kwargs)[0]
  File "usr/local/lib/python3.6/dist-packages/tensorflow/python/training/saver.py", line 1473, in _import_meta_graph_with_return_elements
    **kwargs))
  File "usr/local/lib/python3.6/dist-packages/tensorflow/python/framework/meta_graph.py", line 857, in import_scoped_meta_graph_with_return_elements
    return_elements=return_elements)
  File "usr/local/lib/python3.6/dist-packages/tensorflow/python/util/deprecation.py", line 507, in new_func
    return func(*args, **kwargs)
  File "usr/local/lib/python3.6/dist-packages/tensorflow/python/framework/importer.py", line 443, in import_graph_def
    _ProcessNewOps(graph)
  File "usr/local/lib/python3.6/dist-packages/tensorflow/python/framework/importer.py", line 236, in _ProcessNewOps
    for new_op in graph._add_new_tf_operations(compute_devices=False):  # pylint: disable=protected-access
  File "usr/local/lib/python3.6/dist-packages/tensorflow/python/framework/ops.py", line 3751, in _add_new_tf_operations
    for c_op in c_api_util.new_tf_operations(self)
  File "usr/local/lib/python3.6/dist-packages/tensorflow/python/framework/ops.py", line 3751, in <listcomp>
    for c_op in c_api_util.new_tf_operations(self)
  File "usr/local/lib/python3.6/dist-packages/tensorflow/python/framework/ops.py", line 3641, in _create_op_from_tf_operation
    ret = Operation(c_op, self)
  File "usr/local/lib/python3.6/dist-packages/tensorflow/python/framework/ops.py", line 2005, in __init__
    self._traceback = tf_stack.extract_stack()

有人可以指出我做错了什么吗？提前致谢。