Running main.lua gives index error

[jithintomz]

When i run main.lua it gives following error

parsing file: data/ans.txt
parsing done
/Users/jithin/torch/install/bin/luajit: /Users/jithin/.luarocks/share/lua/5.1/torch/Tensor.lua:238: attempt to index a nil value
stack traceback:
/Users/jithin/.luarocks/share/lua/5.1/torch/Tensor.lua:238: in function 'type'
/Users/jithin/.luarocks/share/lua/5.1/nn/utils.lua:52: in function 'recursiveType'
/Users/jithin/.luarocks/share/lua/5.1/nn/Module.lua:126: in function 'cuda'
main.lua:8: in main chunk
[C]: in function 'dofile'
...thin/torch/install/lib/luarocks/rocks/trepl/scm-1/bin/th:145: in main chunk
[C]: at 0x0107385bd0