session问题

[yuu-Wang]

Traceback (most recent call last):
File "/home/root3203/wanniny/code/DDcGAN-master/PET-MRI image fusion/main.py", line 57, in
main()
File "/home/root3203/wanniny/code/DDcGAN-master/PET-MRI image fusion/main.py", line 32, in main
train(sources, MODEL_SAVE_PATH, EPOCHES, BATCH_SIZE, logging_period=LOGGING)
File "/home/root3203/wanniny/code/DDcGAN-master/PET-MRI image fusion/train.py", line 200, in train
saver.save(sess, save_path + str(epoch) + '/' + str(epoch) + '.ckpt')
File "/home/root3203/anaconda3/envs/tf/lib/python3.6/site-packages/tensorflow/python/training/saver.py", line 1703, in save
{self.saver_def.filename_tensor_name: checkpoint_file})
File "/home/root3203/anaconda3/envs/tf/lib/python3.6/site-packages/tensorflow/python/client/session.py", line 900, in run
run_metadata_ptr)
File "/home/root3203/anaconda3/envs/tf/lib/python3.6/site-packages/tensorflow/python/client/session.py", line 1058, in _run
raise RuntimeError('Attempted to use a closed Session.')
RuntimeError: Attempted to use a closed Session.
您好在跑完您的training后总是遇到这个错误请问怎么解决