Attempted to use a closed Session.

[SolicTous]

I have an issue with Attempt to use a closed Session in the line with "queue_input_val: val_batch"
What is the reason, by which it happens.

.................
Step: 99 LR: 0.0001000 Feature: 21.95053 Pixel: 0.33819 TV: 0.00000 Time: 0.18408
Step: 100 LR: 0.0001000 Feature: 18.16217 Pixel: 0.31331 TV: 0.00000 Time: 0.17411
Model saved in file: /home/developer/PycharmProjects/WCT-TF/models/trained/relu1_1/model.ckpt-100
2020-10-01 15:43:06.942311: W tensorflow/core/kernels/queue_base.cc:285] _1_fifo_queue: Skipping cancelled dequeue attempt with queue not closed
INFO:tensorflow:Error reported to Coordinator: <class 'tensorflow.python.framework.errors_impl.CancelledError'>, Dequeue operation was cancelled
[[{{node fifo_queue_Dequeue}}]]
Exception in thread Thread-1:
Traceback (most recent call last):
File "/usr/lib/python3.6/threading.py", line 916, in _bootstrap_inner
self.run()
File "/usr/lib/python3.6/threading.py", line 864, in run
self._target(*self._args, **self._kwargs)
File "train.py", line 116, in enqueue
queue_input_val: val_batch})
File "/home/developer/PycharmProjects/Inpaint_PConv-Keras/venv/lib/python3.6/site-packages/tensorflow/python/client/session.py", line 929, in run
run_metadata_ptr)
File "/home/developer/PycharmProjects/Inpaint_PConv-Keras/venv/lib/python3.6/site-packages/tensorflow/python/client/session.py", line 1075, in _run
raise RuntimeError('Attempted to use a closed Session.')
RuntimeError: Attempted to use a closed Session.

[SolicTous]

I have tried to replace unqueue in with.... but didn't help