KittiSeg训练train.py问题解决

出现错误 "No variable provide" 

File "train.py", line 131, in 
tf.app.run()
File "/home/emma/anaconda3/envs/tensorflow/lib/python3.6/site-packages/tensorflow/python/platform/app.py", line 126, in run
_sys.exit(main(argv))
File "train.py", line 127, in main
train.do_training(hypes)
File "incl/tensorvision/train.py", line 377, in do_training
tv_graph = core.build_training_graph(hypes, queue, modules)
File "incl/tensorvision/core.py", line 100, in build_training_graph
global_step, learning_rate)
File "/home/emma/fcn/KittiSeg/hypes/../optimizer/generic_optimizer.py", line 91, in training
global_step=global_step)
File "/home/emma/anaconda3/envs/tensorflow/lib/python3.6/site-packages/tensorflow/python/training/optimizer.py", line 529, in apply_gradients
raise ValueError("No variables provided.")
ValueError: No variables provided.

解决：把 generic_optimizer.py 中，79行给成下边的代码：