ValueError: need at least one array to stack

[lovewangwenfly]

when i train my own datasets it occurs: ValueError: need at least one array to stack 327it [01:31, 3.57it/s] Traceback (most recent call last): File "H:/wangwenjingyolov/simple-faster-rcnn-pytorch-master/train.py", line 130, in fire.Fire() File "H:\wangwenjingyolov\simple-faster-rcnn-pytorch-master\venv\lib\site-packages\fire\core.py", line 141, in Fire component_trace = _Fire(component, args, parsed_flag_args, context, name) File "H:\wangwenjingyolov\simple-faster-rcnn-pytorch-master\venv\lib\site-packages\fire\core.py", line 471, in Fire target=component.name) File "H:\wangwenjingyolov\simple-faster-rcnn-pytorch-master\venv\lib\site-packages\fire\core.py", line 681, in CallAndUpdateTrace component = fn(*varargs, **kwargs) File "H:/wangwenjingyolov/simple-faster-rcnn-pytorch-master/train.py", line 76, in train for ii, (img, bbox, label, scale) in tqdm(enumerate(dataloader)): File "H:\wangwenjingyolov\simple-faster-rcnn-pytorch-master\venv\lib\site-packages\tqdm\std.py", line 1185, in iter for obj in iterable: File "H:\wangwenjingyolov\simple-faster-rcnn-pytorch-master\venv\lib\site-packages\torch\utils\data\dataloader.py", line 345, in next data = self._next_data() File "H:\wangwenjingyolov\simple-faster-rcnn-pytorch-master\venv\lib\site-packages\torch\utils\data\dataloader.py", line 385, in _next_data data = self._dataset_fetcher.fetch(index) # may raise StopIteration File "H:\wangwenjingyolov\simple-faster-rcnn-pytorch-master\venv\lib\site-packages\torch\utils\data_utils\fetch.py", line 44, in fetch data = [self.dataset[idx] for idx in possibly_batched_index] File "H:\wangwenjingyolov\simple-faster-rcnn-pytorch-master\venv\lib\site-packages\torch\utils\data_utils\fetch.py", line 44, in data = [self.dataset[idx] for idx in possibly_batched_index] File "H:\wangwenjingyolov\simple-faster-rcnn-pytorch-master\data\dataset.py", line 107, in getitem ori_img, bbox, label, difficult = self.db.get_example(idx) File "H:\wangwenjingyolov\simple-faster-rcnn-pytorch-master\data\voc_dataset.py", line 131, in get_example bbox = np.stack(bbox).astype(np.float32) File "<array_function internals>", line 6, in stack File "H:\wangwenjingyolov\simple-faster-rcnn-pytorch-master\venv\lib\site-packages\numpy\core\shape_base.py", line 423, in stack raise ValueError('need at least one array to stack') ValueError: need at least one array to stack

Process finished with exit code 1

[lovewangwenfly]

where can modify?

[fxyp]

same question. It could be an error caused by the dataset. How did you solve it?

[gladdduck]

it has been temporarily fixed issue