I am tryin to train the model but it gives error in structure_gan

[Aasimrafique]

on training set:
online epoch # 1 [batchSize = 64 lr = 0.0002, momentum = 0.5]
D: 0.693021
4e-06 G: 0.698091
D: 0.693876
4e-06 G: 0.697830
D: 0.693060
4e-06 G: 0.698690
/home/aasim/torch/install/bin/luajit: /home/aasim/torch/install/share/lua/5.1/threads/threads.lua:255:
[thread 1 endcallback] ...cegenration/code/ss-gan/structure-gan/adversarial_ct.lua:167: attempt to index field 'modules' (a nil value)
[thread 2 endcallback] ...cegenration/code/ss-gan/structure-gan/adversarial_ct.lua:167: attempt to index field 'modules' (a nil value)
[thread 1 endcallback] ...cegenration/code/ss-gan/structure-gan/adversarial_ct.lua:167: attempt to index field 'modules' (a nil value)
stack traceback:
[C]: in function 'error'
/home/aasim/torch/install/share/lua/5.1/threads/threads.lua:255: in function 'synchronize'
/home/aasim/torch/install/share/lua/5.1/threads/threads.lua:196: in function 'addjob'
train.lua:245: in function 'train'
train.lua:265: in main chunk
[C]: in function 'dofile'
...asim/torch/install/lib/luarocks/rocks/trepl/scm-1/bin/th:131: in main chunk
[C]: at 0x00406240
Regards,
Aasim