Python 无法将.ckpt.meta文件转换为.pb文件

对不起，上下文含糊不清

我收到一个来自某个人的.ckpt.meta文件，用于他们培训的模型，我正在尝试将.ckpt.meta文件转换为.pb文件。 搜索论坛，我能够得到一个特定的代码块用于此目的

import tensorflow.compat.v1 as tf
meta_path = '/content/drive/My Drive/snapshot_12.ckpt.meta' # Your .meta file
output_node_names = ['output:0']    # Output nodes

with tf.Session() as sess:
    # Restore the graph
    saver = tf.train.import_meta_graph(meta_path)
    sess = tf.Session(config=tf.ConfigProto(
      allow_soft_placement=True, log_device_placement=True))
    # Load weights
    saver.restore(sess,'/content/drive/My Drive/snapshot_12.ckpt.meta')

    output_node_names = [n.name for n in tf.get_default_graph().as_graph_def().node]

    # Freeze the graph
    frozen_graph_def = tf.graph_util.convert_variables_to_constants(
        sess,
        sess.graph_def,
        output_node_names)

    # Save the frozen graph
    with open('output_graph.pb', 'wb') as f:
      f.write(frozen_graph_def.SerializeToString())

在google colab上运行时出错

错误

这个错误有什么解决办法吗？谢谢你的帮助

DataLossError: Unable to open table file /content/drive/My Drive/snapshot_12.ckpt.meta: Data loss: not an sstable (bad magic number): perhaps your file is in a different file format and you need to use a different restore operator?
     [[{{node save/RestoreV2}}]]