inference error using the pretrained model

[huitang]

I downloaded the pertained model zip file , it contains these files

Did I miss any files in downloading?

in this line
latest_checkpoint = tf.train.latest_checkpoint(train_dir)
latest_checkpoint returns None
so it gives this error because of the following code
if latest_checkpoint is None:
raise Exception("unable to find a checkpoint at location: %s" % train_dir)

Can anyone please help. Many thanks!!!

I tried to freeze the model, but in my freezing code since the model is not found, I can not even freeze it