Could you give me some hints to fix this issue? Thanks a lot!

[newforrestgump001]

I0310 13:43:27.631085 15354 net.cpp:774] Copying source layer res5c
I0310 13:43:27.631091 15354 net.cpp:774] Copying source layer res5c_relu
I0310 13:43:27.631095 15354 net.cpp:771] Ignoring source layer pool5
I0310 13:43:27.631100 15354 net.cpp:771] Ignoring source layer fc1000
I0310 13:43:27.631104 15354 net.cpp:771] Ignoring source layer prob
Solving...
Traceback (most recent call last):
File "./tools/train_net.py", line 112, in
max_iters=args.max_iters)
File "/home2/opensource/py-R-FCN/tools/../lib/fast_rcnn/train.py", line 205, in train_net
model_paths = sw.train_model(max_iters)
File "/home2/opensource/py-R-FCN/tools/../lib/fast_rcnn/train.py", line 146, in train_model
self.solver.step(1)
File "/home2/opensource/py-R-FCN/tools/../lib/rpn/proposal_target_layer.py", line 66, in forward
rois_per_image, self._num_classes)
File "/home2/opensource/py-R-FCN/tools/../lib/rpn/proposal_target_layer.py", line 214, in _sample_rois
_get_bbox_regression_labels(bbox_target_data, num_classes)
File "/home2/opensource/py-R-FCN/tools/../lib/rpn/proposal_target_layer.py", line 146, in _get_bbox_regression_labels
bbox_targets[ind, start:end] = bbox_target_data[ind, 1:]
TypeError: slice indices must be integers or None or have an index method