error when run tools/train.py

[Warning] Your mxnet does not support ProposalTarget [Warning] Your mxnet does not support DecodeBBox [Warning] Your mxnet does not support BBoxNorm [Warning] Your mxnet does not support FocalLoss Traceback (most recent call last): File "tools/train.py", line 412, in <module> train_net(parse_args()) File "tools/train.py", line 407, in parse_args config = importlib.import_module(args.config.replace('.py', '').replace('/', '.')) File "/mmdetection3d/RangeDet/config/rangedet/rangedet_wo_aug_4_18e.py", line 22, in <module> from rangedet.symbol.head.builder import RangeRCNN as Detector File "/mmdetection3d/RangeDet/rangedet/symbol/head/builder.py", line 4, in <module> from operator_py import \ File "/mmdetection3d/RangeDet/operator_py/batch_rotated_iou.py", line 3, in <module> from mxnet.ndarray.contrib import RotatedIOU ImportError: cannot import name 'RotatedIOU' from 'mxnet.ndarray.contrib' (/usr/local/lib/python3.7/dist-packages/mxnet/ndarray/contrib.py)

the link to download MxNet is invalid, can you provide a new link?

this is provided by the SimpleDet, but it is invalid https://1dv.aflat.top/mxnet_cu101-1.6.0b20191214-py2.py3-none-manylinux1_x86_64.whl