运行swin-transformer的demo时遇到的问题

Question

Traceback (most recent call last):
File "demo/image_demo.py", line 3, in
from mmdet.apis import inference_detector, init_detector, show_result_pyplot
File "d:\研究生材料\transformer\swin-transformer-object-detection-master\mmdet\apis_init.py", line 1, in
from .inference import (async_inference_detector, inference_detector,
File "d:\研究生材料\transformer\swin-transformer-object-detection-master\mmdet\apis\inference.py", line 6, in
from mmcv.ops import RoIPool
File "d:\研究生材料\transformer\swin-transformer-object-detection-master\mmcv-1.3.1\mmcv\ops_init.py", line 1, in
from .bbox import bbox_overlaps
File "d:\研究生材料\transformer\swin-transformer-object-detection-master\mmcv-1.3.1\mmcv\ops\bbox.py", line 3, in
ext_module = ext_loader.load_ext('ext', ['bbox_overlaps'])
File "d:\研究生材料\transformer\swin-transformer-object-detection-master\mmcv-1.3.1\mmcv\utils\ext_loader.py", line 11, in load_ext
ext = importlib.import_module('mmcv.' + name)
File "E:\anaconda\envs\Swin\lib\importlib_init.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
ImportError: DLL load failed while importing _ext: 找不到指定的程序。