Getting exception immediately after training starts

[hardikasnani]

=> Setting up data loader
=> Loading trainer
=> Training epoch # 1
/root/torch/install/bin/luajit: /root/torch/install/share/lua/5.1/threads/threads.lua:183: [thread 1 callback] /root/torch/install/share/lua/5.1/cv/imgproc/init.lua:1837: 'struct TensorPlusInt' has no member named 'val'
stack traceback:
/root/torch/install/share/lua/5.1/cv/imgproc/init.lua:1837: in function 'connectedComponents'
../util/lua/floorplan_utils.lua:311: in function 'findConnectedComponents'
../util/lua/floorplan_utils.lua:5819: in function 'getSegmentation'
./models/heatmap-segmentation-dataloader.lua:71: in function <./models/heatmap-segmentation-dataloader.lua:64>
[C]: in function 'xpcall'
/root/torch/install/share/lua/5.1/threads/threads.lua:234: in function 'callback'
/root/torch/install/share/lua/5.1/threads/queue.lua:65: in function </root/torch/install/share/lua/5.1/threads/queue.lua:41>
[C]: in function 'pcall'
/root/torch/install/share/lua/5.1/threads/queue.lua:40: in function 'dojob'
[string " local Queue = require 'threads.queue'..."]:15: in main chunk
stack traceback:
[C]: in function 'error'
/root/torch/install/share/lua/5.1/threads/threads.lua:183: in function 'dojob'
./models/heatmap-segmentation-dataloader.lua:127: in function '(for generator)'
./models/heatmap-segmentation-train.lua:65: in function 'train'
main.lua:69: in main chunk
[C]: in function 'dofile'
/root/torch/install/lib/luarocks/rocks/trepl/scm-1/bin/th:150: in main chunk
[C]: at 0x562049049570