Traceback (most recent call last):


 "/home/synapse/src/synapse/push/emailpusher.py", line 154, in _process

yield self._unsafe_process()
twisted.mail._except.SMTPConnectError: 421 b'Too many concurrent SMTP connections; please try again later.'

Traceback (most recent call last):


 "coco.py", line 498, in <module>

layers='heads')


 "/home/dong/dong/pytorch/2-mask-rcnn/model.py", line 1796, in train_model

loss, loss_rpn_class, loss_rpn_bbox, loss_mrcnn_class, loss_mrcnn_bbox, loss_mrcnn_mask = self.train_epoch(train_generator, optimizer, self.config.STEPS_PER_EPOCH


 "/home/dong/dong/pytorch/2-mask-rcnn/model.py", line 1858, in train_epoch

self.predict([images, image_metas, gt_class_ids, gt_boxes, gt_masks], mode='training')


 "/home/dong/dong/pytorch/2-mask-rcnn/model.py", line 1732, in predict

mrcnn_class_logits, mrcnn_class, mrcnn_bbox = self.classifier(mrcnn_feature_maps, rois)


 "/home/dong/anaconda3/lib/python3.6/site-packages/torch/nn/modules/module.py", line 357, in __call__

result = self.forward(*input, **kwargs)


 "/home/dong/zhangdong/pytorch/2-mask-rcnn/model.py", line 929, in forward

x = pyramid_roi_align([rois]+x, self.pool_size, self.image_shape)


 "/home/dong/dong/pytorch/2-mask-rcnn/model.py", line 436, in pyramid_roi_align

y1, x1, y2, x2 = boxes.chunk(4, dim=1)
RuntimeError: dimension out of range (expected to be in range of [-1, 0], but got 1)