AssertionError

[jashshah999]

While trying to run train.sh I encountered this error please do help me out in any way. Thanks!
Traceback (most recent call last):
File "/home/jashshah999/Downloads/SqueezeSeg/src/train.py", line 220, in
tf.app.run()
File "/home/jashshah999/venv/local/lib/python2.7/site-packages/tensorflow/python/platform/app.py", line 44, in run
_sys.exit(main(_sys.argv[:1] + flags_passthrough))
File "/home/jashshah999/Downloads/SqueezeSeg/src/train.py", line 216, in main
train()
File "/home/jashshah999/Downloads/SqueezeSeg/src/train.py", line 64, in train
imdb = kitti(FLAGS.image_set, FLAGS.data_path, mc)
File "/home/jashshah999/Downloads/SqueezeSeg/src/imdb/kitti.py", line 20, in init
self._image_idx = self._load_image_set_idx()
File "/home/jashshah999/Downloads/SqueezeSeg/src/imdb/kitti.py", line 33, in _load_image_set_idx
'File does not exist: {}'.format(image_set_file)
AssertionError: File does not exist: ImageSet/.txt

Also before this, I had to convert all the paths to absolute so anything that had ./ (SOMETHING) had to be changed to /home/jashshah999/Downloads/SqueezeSeg/(SOMETHING)

Please do help me out!
Thanks.