Error in model retraining parameters

[langlangmingyue]

when running: python train.py --use_validation --dataset_path /root/data1/Mega/ --scene_info_path /root/data1/Mega/output

/root/d2-net-master/lib/loss.py:18: UserWarning:
This call to matplotlib.use() has no effect because the backend has already
been chosen; matplotlib.use() must be called before pylab, matplotlib.pyplot,
or matplotlib.backends is imported for the first time.

The backend was originally set to 'Qt5Agg' by the following code:
File "train.py", line 18, in
from lib.dataset import MegaDepthDataset
File "/root/d2-net-master/lib/dataset.py", line 16, in
from lib.utils import preprocess_image
File "/root/d2-net-master/lib/utils.py", line 1, in
import matplotlib.pyplot as plt
File "/root/miniconda3/envs/tensorflow1.12/lib/python3.6/site-packages/matplotlib/pyplot.py", line 71, in
from matplotlib.backends import pylab_setup
File "/root/miniconda3/envs/tensorflow1.12/lib/python3.6/site-packages/matplotlib/backends/init.py", line 16, in
line for line in traceback.format_stack()

matplotlib.use('Agg')
Namespace(batch_size=1, checkpoint_directory='checkpoints', checkpoint_prefix='d2', dataset_path='/root/data1/Mega/', log_file='log.txt', log_interval=250, lr=0.001, model_file='models/d2_ots.pth', num_epochs=10, num_workers=4, plot=False, preprocessing='caffe', scene_info_path='/root/data1/Mega/output', use_validation=True)
hello tomorrow!
hello tomorrow!
[Warning] Checkpoint directory already exists.
[Warning] Log file already exists.
Building the validation dataset...
100%|########################################################################################################################################################| 77/77 [01:22<00:00, 2.13it/s]
0%| | 0/1875 [00:00<?, ?it/s]Exception in thread Thread-2:
Traceback (most recent call last):
File "/root/miniconda3/envs/tensorflow1.12/lib/python3.6/threading.py", line 916, in _bootstrap_inner
self.run()
File "/root/miniconda3/envs/tensorflow1.12/lib/python3.6/threading.py", line 864, in run
self._target(*self._args, **self._kwargs)
File "/root/miniconda3/envs/tensorflow1.12/lib/python3.6/multiprocessing/resource_sharer.py", line 139, in _serve
signal.pthread_sigmask(signal.SIG_BLOCK, range(1, signal.NSIG))
File "/root/miniconda3/envs/tensorflow1.12/lib/python3.6/signal.py", line 60, in pthread_sigmask
sigs_set = _signal.pthread_sigmask(how, mask)
ValueError: signal number 32 out of range

Exception in thread Thread-2:
Traceback (most recent call last):
File "/root/miniconda3/envs/tensorflow1.12/lib/python3.6/threading.py", line 916, in _bootstrap_inner
self.run()
File "/root/miniconda3/envs/tensorflow1.12/lib/python3.6/threading.py", line 864, in run
self._target(*self._args, **self._kwargs)
File "/root/miniconda3/envs/tensorflow1.12/lib/python3.6/multiprocessing/resource_sharer.py", line 139, in _serve
signal.pthread_sigmask(signal.SIG_BLOCK, range(1, signal.NSIG))
File "/root/miniconda3/envs/tensorflow1.12/lib/python3.6/signal.py", line 60, in pthread_sigmask
sigs_set = _signal.pthread_sigmask(how, mask)
ValueError: signal number 32 out of range

Exception in thread Thread-2:
Traceback (most recent call last):
File "/root/miniconda3/envs/tensorflow1.12/lib/python3.6/threading.py", line 916, in _bootstrap_inner
self.run()
File "/root/miniconda3/envs/tensorflow1.12/lib/python3.6/threading.py", line 864, in run
self._target(*self._args, **self._kwargs)
File "/root/miniconda3/envs/tensorflow1.12/lib/python3.6/multiprocessing/resource_sharer.py", line 139, in _serve
signal.pthread_sigmask(signal.SIG_BLOCK, range(1, signal.NSIG))
File "/root/miniconda3/envs/tensorflow1.12/lib/python3.6/signal.py", line 60, in pthread_sigmask
sigs_set = _signal.pthread_sigmask(how, mask)
ValueError: signal number 32 out of range

Exception in thread Thread-2:
Traceback (most recent call last):
File "/root/miniconda3/envs/tensorflow1.12/lib/python3.6/threading.py", line 916, in _bootstrap_inner
self.run()
File "/root/miniconda3/envs/tensorflow1.12/lib/python3.6/threading.py", line 864, in run
self._target(*self._args, **self._kwargs)
File "/root/miniconda3/envs/tensorflow1.12/lib/python3.6/multiprocessing/resource_sharer.py", line 139, in _serve
signal.pthread_sigmask(signal.SIG_BLOCK, range(1, signal.NSIG))
File "/root/miniconda3/envs/tensorflow1.12/lib/python3.6/signal.py", line 60, in pthread_sigmask
sigs_set = _signal.pthread_sigmask(how, mask)
ValueError: signal number 32 out of range