In Python 2.7 env, stuck after "test_joints.csv is ready" about deeppose HOT 1 OPEN

joints[i], joints[j] = joints[j].copy(), joints[i].copy()

IndexError: index 9 is out of bounds for axis 0 with size 3

Exception in main training loop: 'NoneType' object is not iterable
Traceback (most recent call last):
File "/home/design/anaconda3/envs/tensorflow019/lib/python3.5/site-packages/chainer/training/trainer.py", line 315, in run
update()
File "/home/design/anaconda3/envs/tensorflow019/lib/python3.5/site-packages/chainer/training/updaters/standard_updater.py", line 165, in update
self.update_core()
File "/home/design/anaconda3/envs/tensorflow019/lib/python3.5/site-packages/chainer/training/updaters/parallel_updater.py", line 110, in update_core
batch = iterator.next()
File "/home/design/anaconda3/envs/tensorflow019/lib/python3.5/site-packages/chainer/iterators/multiprocess_iterator.py", line 148, in next
self.dataset_timeout)
File "/home/design/anaconda3/envs/tensorflow019/lib/python3.5/site-packages/chainer/iterators/multiprocess_iterator.py", line 417, in measure
self.mem_size = max(map(_measure, batch))
Will finalize trainer extensions and updater before reraising the exception.
Traceback (most recent call last):
File "scripts/train.py", line 229, in
trainer.run()
File "/home/design/anaconda3/envs/tensorflow019/lib/python3.5/site-packages/chainer/training/trainer.py", line 329, in run
six.reraise(*sys.exc_info())
File "/home/design/anaconda3/envs/tensorflow019/lib/python3.5/site-packages/six.py", line 693, in reraise
raise value
File "/home/design/anaconda3/envs/tensorflow019/lib/python3.5/site-packages/chainer/training/trainer.py", line 315, in run
update()
File "/home/design/anaconda3/envs/tensorflow019/lib/python3.5/site-packages/chainer/training/updaters/standard_updater.py", line 165, in update
self.update_core()
File "/home/design/anaconda3/envs/tensorflow019/lib/python3.5/site-packages/chainer/training/updaters/parallel_updater.py", line 110, in update_core
batch = iterator.next()
File "/home/design/anaconda3/envs/tensorflow019/lib/python3.5/site-packages/chainer/iterators/multiprocess_iterator.py", line 148, in next
self.dataset_timeout)
File "/home/design/anaconda3/envs/tensorflow019/lib/python3.5/site-packages/chainer/iterators/multiprocess_iterator.py", line 417, in measure
self.mem_size = max(map(_measure, batch))
TypeError: 'NoneType' object is not iterable
Error in sys.excepthook:

Original exception was:
Error in sys.excepthook:

how to solve it？

from deeppose.