Facing below issue while executing train.py.

[arm235]

_np_qint32 = np.dtype([("qint32", np.int32, 1)]) C:\Users\hp\anaconda3\envs\voxelnet\lib\site-packages\tensorflow\python\framework\dtypes.py:532: FutureWarning: Passing (type, 1) or '1type' as a synonym of type is deprecated; in a future version of numpy, it will be understood as (type, (1,)) / '(1,)type'. np_resource = np.dtype([("resource", np.ubyte, 1)]) Dataset lidar length: 5237 Dataset tag length: 5237 Dataset total length: 5237 C:\Users\hp\anaconda3\envs\voxelnet\lib\site-packages\tensorflow\python\framework\dtypes.py:523: FutureWarning: Passing (type, 1) or '1type' as a synonym of type is deprecated; in a future version of numpy, it will be understood as (type, (1,)) / '(1,)type'. _np_qint8 = np.dtype([("qint8", np.int8, 1)]) C:\Users\hp\anaconda3\envs\voxelnet\lib\site-packages\tensorflow\python\framework\dtypes.py:524: FutureWarning: Passing (type, 1) or '1type' as a synonym of type is deprecated; in a future version of numpy, it will be understood as (type, (1,)) / '(1,)type'. _np_quint8 = np.dtype([("quint8", np.uint8, 1)]) C:\Users\hp\anaconda3\envs\voxelnet\lib\site-packages\tensorflow\python\framework\dtypes.py:525: FutureWarning: Passing (type, 1) or '1type' as a synonym of type is deprecated; in a future version of numpy, it will be understood as (type, (1,)) / '(1,)type'. _np_qint16 = np.dtype([("qint16", np.int16, 1)]) C:\Users\hp\anaconda3\envs\voxelnet\lib\site-packages\tensorflow\python\framework\dtypes.py:526: FutureWarning: Passing (type, 1) or '1type' as a synonym of type is deprecated; in a future version of numpy, it will be understood as (type, (1,)) / '(1,)type'. _np_quint16 = np.dtype([("quint16", np.uint16, 1)]) C:\Users\hp\anaconda3\envs\voxelnet\lib\site-packages\tensorflow\python\framework\dtypes.py:527: FutureWarning: Passing (type, 1) or '1type' as a synonym of type is deprecated; in a future version of numpy, it will be understood as (type, (1,)) / '(1,)type'. _np_qint32 = np.dtype([("qint32", np.int32, 1)]) C:\Users\hp\anaconda3\envs\voxelnet\lib\site-packages\tensorflow\python\framework\dtypes.py:532: FutureWarning: Passing (type, 1) or '1type' as a synonym of type is deprecated; in a future version of numpy, it will be understood as (type, (1,)) / '(1,)type'. np_resource = np.dtype([("resource", np.ubyte, 1)]) OpenCV Error: Assertion failed (ssize.width > 0 && ssize.height > 0) in cv::resize, file C:\ci\opencv_1512688052760\work\modules\imgproc\src\resize.cpp, line 3289 OpenCV Error: Assertion failed (ssize.width > 0 && ssize.height > 0) in cv::resize, file C:\ci\opencv_1512688052760\work\modules\imgproc\src\resize.cpp, line 3289 OpenCV Error: Assertion failed (ssize.width > 0 && ssize.height > 0) in cv::resize, file C:\ci\opencv_1512688052760\work\modules\imgproc\src\resize.cpp, line 3289 OpenCV Error: Assertion failed (ssize.width > 0 && ssize.height > 0) in cv::resize, file C:\ci\opencv_1512688052760\work\modules\imgproc\src\resize.cpp, line 3289 Process Process-1: Traceback (most recent call last): File "C:\Users\hp\anaconda3\envs\voxelnet\lib\multiprocessing\process.py", line 258, in _bootstrap self.run() File "C:\Users\hp\anaconda3\envs\voxelnet\lib\multiprocessing\process.py", line 93, in run self._target(*self._args, **self._kwargs) File "C:\Users\hp\Documents\VoxelNet-tensorflow\utils\kitti_loader.py", line 237, in loader_worker_main self.fill_queue(batch_size) File "C:\Users\hp\Documents\VoxelNet-tensorflow\utils\kitti_loader.py", line 166, in fill_queue voxel[idx * single_batch_size:(idx + 1) * single_batch_size]) File "C:\Users\hp\Documents\VoxelNet-tensorflow\utils\kitti_loader.py", line 269, in build_input feature = np.concatenate(feature_list) File "<array_function internals>", line 6, in concatenate ValueError: need at least one array to concatenate

[zkopcilova]

I'm facing the same issue