Problem with validation code

[saivenkat-163]

The eval code evaluates only the latest checkpoint and exits throwing an error. I have pasted the error below. Can you please advice me on how to solve this problem?

Starting evaluation of './output/market1501/cosine-softmax\model.ckpt-0'
2021-07-09 16:42:27.964017: W tensorflow/core/kernels/queue_base.cc:277] _0_fifo_queue: Skipping cancelled enqueue attempt with queue not closed
Traceback (most recent call last):
File "train_market1501.py", line 127, in
main()
File "train_market1501.py", line 78, in main
train_app.eval_loop(
File "X:\deepsort_nwojke\cosine_metric_training\train_app.py", line 442, in eval_loop
trainer.evaluate(
File "X:\deepsort_nwojke\cosine_metric_training\queued_trainer.py", line 530, in evaluate
summary_str = session.run(summary_op)
File "C:\Users\Sai\anaconda3\lib\site-packages\tensorflow\python\client\session.py", line 967, in run
result = self._run(None, fetches, feed_dict, options_ptr,
File "C:\Users\Sai\anaconda3\lib\site-packages\tensorflow\python\client\session.py", line 1175, in _run
fetch_handler = _FetchHandler(
File "C:\Users\Sai\anaconda3\lib\site-packages\tensorflow\python\client\session.py", line 487, in init
self._fetch_mapper = _FetchMapper.for_fetch(fetches)
File "C:\Users\Sai\anaconda3\lib\site-packages\tensorflow\python\client\session.py", line 264, in for_fetch
raise TypeError('Fetch argument %r has invalid type %r' %
TypeError: Fetch argument None has invalid type <class 'NoneType'>