WARNING: filter_boxes() remove ALL proposal.

[NilsDengler]

Hi,
I encountered the problem that I got the error "WARNING: filter_boxes() remove ALL proposal." (proposal_layer.py line 191) during training. I saw that the values of the boxes are NaNs, but I don't know exactly why. Also important is that this Error occurs after a few hundred steps and not from the beginning. I checked my data but all masks and annotations seem to be fine. Right before the warning appears I get this RuntimeWarnng:

affordance-net/tools/../lib/fast_rcnn/bbox_transform.py:48: RuntimeWarning:
overflow encountered in exp pred_w = np.exp(dw) * widths[:, np.newaxis]
affordance-net/tools/../lib/fast_rcnn/bbox_transform.py:48: RuntimeWarning: overflow encountered in multiply pred_w = np.exp(dw) * widths[:, np.newaxis]
affordance-net/tools/../lib/fast_rcnn/bbox_transform.py:49: RuntimeWarning: overflow encountered in exp pred_h = np.exp(dh) * heights[:, np.newaxis]
affordance-net/tools/../lib/fast_rcnn/bbox_transform.py:49: RuntimeWarning: overflow encountered in multiply pred_h = np.exp(dh) * heights[:, np.newaxis]

Do you know why this error could happened